31255420116 has 48 divisors (see below), whose sum is σ = 73188640448. Its totient is φ = 10381478400.

The previous prime is 31255420111. The next prime is 31255420117. The reversal of 31255420116 is 61102455213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31255420111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6850476 + ... + 6855036.

Almost surely, 2^31255420116 is an apocalyptic number.

It is an amenable number.

31255420116 is an abundant number, since it is smaller than the sum of its proper divisors (41933220332).

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

31255420116 is a wasteful number, since it uses less digits than its factorization.

31255420116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6472 (or 6470 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 31255420116 its reverse (61102455213), we get a palindrome (92357875329).

The spelling of 31255420116 in words is "thirty-one billion, two hundred fifty-five million, four hundred twenty thousand, one hundred sixteen".