2971090731 has 16 divisors (see below), whose sum is σ = 4793693184. Its totient is φ = 1597897344.

The previous prime is 2971090709. The next prime is 2971090777. The reversal of 2971090731 is 1370901792.

It is not a de Polignac number, because 2971090731 - 2⁵ = 2971090699 is a prime.

It is a super-2 number, since 2×2971090731² = 17654760263668228722, 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 2971090731.

It is not an unprimeable number, because it can be changed into a prime (2971090231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4160835 + ... + 4161548.

It is an arithmetic number, because the mean of its divisors is an integer number (299605824).

Almost surely, 2^2971090731 is an apocalyptic number.

2971090731 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2971090731 is a deficient number, since it is larger than the sum of its proper divisors (1822602453).

2971090731 is a wasteful number, since it uses less digits than its factorization.

2971090731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8322410.

The product of its (nonzero) digits is 23814, while the sum is 39.

The square root of 2971090731 is about 54507.7125827162. The cubic root of 2971090731 is about 1437.6019002345.

The spelling of 2971090731 in words is "two billion, nine hundred seventy-one million, ninety thousand, seven hundred thirty-one".