31404631442 has 16 divisors (see below), whose sum is σ = 47254344192. Its totient is φ = 15653248800.

The previous prime is 31404631429. The next prime is 31404631459. The reversal of 31404631442 is 24413640413.

It is a junction number, because it is equal to n+sod(n) for n = 31404631399 and 31404631408.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 992567 + ... + 1023717.

It is an arithmetic number, because the mean of its divisors is an integer number (2953396512).

Almost surely, 2^31404631442 is an apocalyptic number.

31404631442 is a deficient number, since it is larger than the sum of its proper divisors (15849712750).

31404631442 is a wasteful number, since it uses less digits than its factorization.

31404631442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32713.

The product of its (nonzero) digits is 27648, while the sum is 32.

The spelling of 31404631442 in words is "thirty-one billion, four hundred four million, six hundred thirty-one thousand, four hundred forty-two".