2131031302312 has 32 divisors (see below), whose sum is σ = 4369281487200. Its totient is φ = 966349742400.

The previous prime is 2131031302303. The next prime is 2131031302339. The reversal of 2131031302312 is 2132031301312.

It is a super-2 number, since 2×2131031302312² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28723362 + ... + 28797457.

It is an arithmetic number, because the mean of its divisors is an integer number (136540046475).

Almost surely, 2^{2131031302312} is an apocalyptic number.

2131031302312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2131031302312 is an abundant number, since it is smaller than the sum of its proper divisors (2238250184888).

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

2131031302312 is a wasteful number, since it uses less digits than its factorization.

2131031302312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57521257 (or 57521253 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 2131031302312 its reverse (2132031301312), we get a palindrome (4263062603624).

The spelling of 2131031302312 in words is "two trillion, one hundred thirty-one billion, thirty-one million, three hundred two thousand, three hundred twelve".