31425436538 has 8 divisors (see below), whose sum is σ = 47138928480. Its totient is φ = 15712460380.

The previous prime is 31425436457. The next prime is 31425436541. The reversal of 31425436538 is 83563452413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117833 + ... + 277011.

It is an arithmetic number, because the mean of its divisors is an integer number (5892366060).

Almost surely, 2^31425436538 is an apocalyptic number.

31425436538 is a deficient number, since it is larger than the sum of its proper divisors (15713491942).

31425436538 is a wasteful number, since it uses less digits than its factorization.

31425436538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257892.

The product of its digits is 1036800, while the sum is 44.

The spelling of 31425436538 in words is "thirty-one billion, four hundred twenty-five million, four hundred thirty-six thousand, five hundred thirty-eight".