31453242012 has 18 divisors (see below), whose sum is σ = 79506806288. Its totient is φ = 10484413992.

The previous prime is 31453242011. The next prime is 31453242047. The reversal of 31453242012 is 21024235413.

31453242012 is a `hidden beast` number, since 3 + 1 + 453 + 2 + 4 + 201 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31453242011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 436850548 + ... + 436850619.

Almost surely, 2^31453242012 is an apocalyptic number.

It is an amenable number.

31453242012 is an abundant number, since it is smaller than the sum of its proper divisors (48053564276).

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

31453242012 is a wasteful number, since it uses less digits than its factorization.

31453242012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873701177 (or 873701172 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 31453242012 its reverse (21024235413), we get a palindrome (52477477425).

The spelling of 31453242012 in words is "thirty-one billion, four hundred fifty-three million, two hundred forty-two thousand, twelve".