31451031051012 has 36 divisors (see below), whose sum is σ = 79540633138876. Its totient is φ = 10478479334400.

The previous prime is 31451031051007. The next prime is 31451031051059. The reversal of 31451031051012 is 21015013015413.

31451031051012 is a `hidden beast` number, since 3 + 1 + 45 + 103 + 1 + 0 + 510 + 1 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17182401167556 + 14268629883456 = 4145166^2 + 3777384^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×31451031051012³ (a number of 41 digits) contains 333 as substring.

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, 216496489 + ... + 216641712.

Almost surely, 2^{31451031051012} is an apocalyptic number.

It is an amenable number.

31451031051012 is an abundant number, since it is smaller than the sum of its proper divisors (48089602087864).

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

31451031051012 is a wasteful number, since it uses less digits than its factorization.

31451031051012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433140228 (or 433140223 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

Adding to 31451031051012 its reverse (21015013015413), we get a palindrome (52466044066425).

The spelling of 31451031051012 in words is "thirty-one trillion, four hundred fifty-one billion, thirty-one million, fifty-one thousand, twelve".