1213136350 has 24 divisors (see below), whose sum is σ = 2257355520. Its totient is φ = 485056320.

The previous prime is 1213136333. The next prime is 1213136399. The reversal of 1213136350 is 536313121.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 217699 + ... + 223201.

It is an arithmetic number, because the mean of its divisors is an integer number (94056480).

Almost surely, 2^1213136350 is an apocalyptic number.

1213136350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213136350 is a deficient number, since it is larger than the sum of its proper divisors (1044219170).

1213136350 is a wasteful number, since it uses less digits than its factorization.

1213136350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9924 (or 9919 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 1213136350 is about 34830.1069478691. The cubic root of 1213136350 is about 1066.5221315663.

Adding to 1213136350 its reverse (536313121), we get a palindrome (1749449471).

The spelling of 1213136350 in words is "one billion, two hundred thirteen million, one hundred thirty-six thousand, three hundred fifty".