31555454012 has 6 divisors (see below), whose sum is σ = 55222044528. Its totient is φ = 15777727004.

The previous prime is 31555453913. The next prime is 31555454017. The reversal of 31555454012 is 21045455513.

It is a super-2 number, since 2×31555454012² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31555454017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3944431748 + ... + 3944431755.

It is an arithmetic number, because the mean of its divisors is an integer number (9203674088).

Almost surely, 2^31555454012 is an apocalyptic number.

It is an amenable number.

31555454012 is a deficient number, since it is larger than the sum of its proper divisors (23666590516).

31555454012 is a wasteful number, since it uses less digits than its factorization.

31555454012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7888863507 (or 7888863505 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 31555454012 in words is "thirty-one billion, five hundred fifty-five million, four hundred fifty-four thousand, twelve".