1139472831 has 32 divisors (see below), whose sum is σ = 1860830208. Its totient is φ = 605975040.

The previous prime is 1139472827. The next prime is 1139472839. The reversal of 1139472831 is 1382749311.

It is not a de Polignac number, because 1139472831 - 2² = 1139472827 is a prime.

It is a super-2 number, since 2×1139472831² = 2596796665174309122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1139472831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139472839) 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, 14010 + ... + 49751.

It is an arithmetic number, because the mean of its divisors is an integer number (58150944).

Almost surely, 2^1139472831 is an apocalyptic number.

1139472831 is a deficient number, since it is larger than the sum of its proper divisors (721357377).

1139472831 is a wasteful number, since it uses less digits than its factorization.

1139472831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63831.

The product of its digits is 36288, while the sum is 39.

The square root of 1139472831 is about 33756.0784304101. The cubic root of 1139472831 is about 1044.4828774647.

The spelling of 1139472831 in words is "one billion, one hundred thirty-nine million, four hundred seventy-two thousand, eight hundred thirty-one".