7940816031 has 4 divisors (see below), whose sum is σ = 10587754712. Its totient is φ = 5293877352.

The previous prime is 7940816017. The next prime is 7940816113. The reversal of 7940816031 is 1306180497.

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

It is not a de Polignac number, because 7940816031 - 2¹⁹ = 7940291743 is a prime.

It is a super-2 number, since 2×7940816031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7940816831) 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, 1323469336 + ... + 1323469341.

It is an arithmetic number, because the mean of its divisors is an integer number (2646938678).

Almost surely, 2^7940816031 is an apocalyptic number.

7940816031 is a deficient number, since it is larger than the sum of its proper divisors (2646938681).

7940816031 is a wasteful number, since it uses less digits than its factorization.

7940816031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2646938680.

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

The square root of 7940816031 is about 89111.2564775068. The cubic root of 7940816031 is about 1995.0557900492.

The spelling of 7940816031 in words is "seven billion, nine hundred forty million, eight hundred sixteen thousand, thirty-one".