31269071139 has 4 divisors (see below), whose sum is σ = 41692094856. Its totient is φ = 20846047424.

The previous prime is 31269071129. The next prime is 31269071201. The reversal of 31269071139 is 93117096213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31269071139 - 2⁴ = 31269071123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31269071139.

It is not an unprimeable number, because it can be changed into a prime (31269071129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5211511854 + ... + 5211511859.

It is an arithmetic number, because the mean of its divisors is an integer number (10423023714).

Almost surely, 2^31269071139 is an apocalyptic number.

31269071139 is a deficient number, since it is larger than the sum of its proper divisors (10423023717).

31269071139 is a wasteful number, since it uses less digits than its factorization.

31269071139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10423023716.

The product of its (nonzero) digits is 61236, while the sum is 42.

The spelling of 31269071139 in words is "thirty-one billion, two hundred sixty-nine million, seventy-one thousand, one hundred thirty-nine".