31402143078 has 16 divisors (see below), whose sum is σ = 63599278080. Its totient is φ = 10334882376.

The previous prime is 31402143061. The next prime is 31402143083. The reversal of 31402143078 is 87034120413.

It is a congruent number.

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, 33124150 + ... + 33125097.

It is an arithmetic number, because the mean of its divisors is an integer number (3974954880).

Almost surely, 2^31402143078 is an apocalyptic number.

31402143078 is an abundant number, since it is smaller than the sum of its proper divisors (32197135002).

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

31402143078 is a wasteful number, since it uses less digits than its factorization.

31402143078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66249331.

The product of its (nonzero) digits is 16128, while the sum is 33.

The spelling of 31402143078 in words is "thirty-one billion, four hundred two million, one hundred forty-three thousand, seventy-eight".