1213142310 has 96 divisors (see below), whose sum is σ = 3272398272. Its totient is φ = 311558400.

The previous prime is 1213142303. The next prime is 1213142311. The reversal of 1213142310 is 132413121.

1213142310 is a `hidden beast` number, since 1 + 213 + 142 + 310 = 666.

It is a super-2 number, since 2×1213142310² = 2943428528624272200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213142311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 334527 + ... + 338133.

It is an arithmetic number, because the mean of its divisors is an integer number (34087482).

Almost surely, 2^1213142310 is an apocalyptic number.

1213142310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213142310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1636199136).

1213142310 is an abundant number, since it is smaller than the sum of its proper divisors (2059255962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213142310 is a wasteful number, since it uses less digits than its factorization.

1213142310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3758 (or 3755 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1213142310 is about 34830.1925059280. The cubic root of 1213142310 is about 1066.5238781305.

Adding to 1213142310 its reverse (132413121), we get a palindrome (1345555431).

The spelling of 1213142310 in words is "one billion, two hundred thirteen million, one hundred forty-two thousand, three hundred ten".