31442345102 has 32 divisors (see below), whose sum is σ = 55092510720. Its totient is φ = 13177918080.

The previous prime is 31442345089. The next prime is 31442345117. The reversal of 31442345102 is 20154324413.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 822902 + ... + 860262.

It is an arithmetic number, because the mean of its divisors is an integer number (1721640960).

Almost surely, 2^31442345102 is an apocalyptic number.

31442345102 is a deficient number, since it is larger than the sum of its proper divisors (23650165618).

31442345102 is a wasteful number, since it uses less digits than its factorization.

31442345102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38696.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 31442345102 its reverse (20154324413), we get a palindrome (51596669515).

The spelling of 31442345102 in words is "thirty-one billion, four hundred forty-two million, three hundred forty-five thousand, one hundred two".