31439474854 has 16 divisors (see below), whose sum is σ = 48324093840. Its totient is φ = 15332476320.

The previous prime is 31439474851. The next prime is 31439474861. The reversal of 31439474854 is 45847493413.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31439474851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196837 + ... + 318784.

It is an arithmetic number, because the mean of its divisors is an integer number (3020255865).

Almost surely, 2^31439474854 is an apocalyptic number.

31439474854 is a deficient number, since it is larger than the sum of its proper divisors (16884618986).

31439474854 is a wasteful number, since it uses less digits than its factorization.

31439474854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516375.

The product of its digits is 5806080, while the sum is 52.

The spelling of 31439474854 in words is "thirty-one billion, four hundred thirty-nine million, four hundred seventy-four thousand, eight hundred fifty-four".