31352378871 has 32 divisors (see below), whose sum is σ = 46298359296. Its totient is φ = 18712512000.

The previous prime is 31352378833. The next prime is 31352378879. The reversal of 31352378871 is 17887325313.

It is not a de Polignac number, because 31352378871 - 2²¹ = 31350281719 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 31352378871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31352378879) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2188251 + ... + 2202531.

It is an arithmetic number, because the mean of its divisors is an integer number (1446823728).

Almost surely, 2^31352378871 is an apocalyptic number.

31352378871 is a deficient number, since it is larger than the sum of its proper divisors (14945980425).

31352378871 is a wasteful number, since it uses less digits than its factorization.

31352378871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15303.

The product of its digits is 846720, while the sum is 48.

The spelling of 31352378871 in words is "thirty-one billion, three hundred fifty-two million, three hundred seventy-eight thousand, eight hundred seventy-one".