31421078358 has 32 divisors (see below), whose sum is σ = 64897254240. Its totient is φ = 10134305280.

The previous prime is 31421078323. The next prime is 31421078383. The reversal of 31421078358 is 85387012413.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 350803 + ... + 431166.

It is an arithmetic number, because the mean of its divisors is an integer number (2028039195).

Almost surely, 2^31421078358 is an apocalyptic number.

31421078358 is an abundant number, since it is smaller than the sum of its proper divisors (33476175882).

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

31421078358 is a wasteful number, since it uses less digits than its factorization.

31421078358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782192.

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 31421078358 in words is "thirty-one billion, four hundred twenty-one million, seventy-eight thousand, three hundred fifty-eight".