2031139206 has 24 divisors (see below), whose sum is σ = 4514378760. Its totient is φ = 676936008.

The previous prime is 2031139171. The next prime is 2031139211. The reversal of 2031139206 is 6029311302.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 2031139206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 328116 + ... + 334248.

It is an arithmetic number, because the mean of its divisors is an integer number (188099115).

Almost surely, 2^2031139206 is an apocalyptic number.

2031139206 is an abundant number, since it is smaller than the sum of its proper divisors (2483239554).

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

2031139206 is an frugal number, since it uses more digits than its factorization.

2031139206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12277 (or 6138 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 2031139206 is about 45068.1617774677. The cubic root of 2031139206 is about 1266.4262283088.

Multiplying 2031139206 by its product of nonzero digits (1944), we get a square (3948534616464 = 1987092²).

The spelling of 2031139206 in words is "two billion, thirty-one million, one hundred thirty-nine thousand, two hundred six".