1212312310 has 24 divisors (see below), whose sum is σ = 2398577328. Its totient is φ = 440840400.

The previous prime is 1212312307. The next prime is 1212312329. The reversal of 1212312310 is 132132121.

It is a super-2 number, since 2×1212312310² = 2939402273955072200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 499746 + ... + 502165.

It is an arithmetic number, because the mean of its divisors is an integer number (99940722).

Almost surely, 2^1212312310 is an apocalyptic number.

1212312310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212312310 is a deficient number, since it is larger than the sum of its proper divisors (1186265018).

1212312310 is a wasteful number, since it uses less digits than its factorization.

1212312310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001940 (or 1001929 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1212312310 is about 34818.2755173199. The cubic root of 1212312310 is about 1066.2805934615.

Adding to 1212312310 its reverse (132132121), we get a palindrome (1344444431).

The spelling of 1212312310 in words is "one billion, two hundred twelve million, three hundred twelve thousand, three hundred ten".