31423402104 has 32 divisors (see below), whose sum is σ = 79040469120. Its totient is φ = 10410205536.

The previous prime is 31423402007. The next prime is 31423402121. The reversal of 31423402104 is 40120432413.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4012372 + ... + 4020195.

It is an arithmetic number, because the mean of its divisors is an integer number (2470014660).

Almost surely, 2^31423402104 is an apocalyptic number.

It is an amenable number.

31423402104 is an abundant number, since it is smaller than the sum of its proper divisors (47617067016).

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

31423402104 is a wasteful number, since it uses less digits than its factorization.

31423402104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8032739 (or 8032735 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 31423402104 its reverse (40120432413), we get a palindrome (71543834517).

The spelling of 31423402104 in words is "thirty-one billion, four hundred twenty-three million, four hundred two thousand, one hundred four".