31642604493 has 24 divisors (see below), whose sum is σ = 42972937824. Its totient is φ = 20706137760.

The previous prime is 31642604473. The next prime is 31642604501. The reversal of 31642604493 is 39440624613.

It is not a de Polignac number, because 31642604493 - 2²¹ = 31640507341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31642604423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48456955 + ... + 48457607.

It is an arithmetic number, because the mean of its divisors is an integer number (1790539076).

Almost surely, 2^31642604493 is an apocalyptic number.

It is an amenable number.

31642604493 is a deficient number, since it is larger than the sum of its proper divisors (11330333331).

31642604493 is an frugal number, since it uses more digits than its factorization.

31642604493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705 (or 1214 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 42.

The spelling of 31642604493 in words is "thirty-one billion, six hundred forty-two million, six hundred four thousand, four hundred ninety-three".