7940231031 has 16 divisors (see below), whose sum is σ = 10722412800. Its totient is φ = 5225951808.

The previous prime is 7940231029. The next prime is 7940231041. The reversal of 7940231031 is 1301320497.

It is not a de Polignac number, because 7940231031 - 2¹ = 7940231029 is a prime.

It is a super-2 number, since 2×7940231031² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7940231031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7940231041) 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, 153390 + ... + 198516.

It is an arithmetic number, because the mean of its divisors is an integer number (670150800).

Almost surely, 2^7940231031 is an apocalyptic number.

7940231031 is a deficient number, since it is larger than the sum of its proper divisors (2782181769).

7940231031 is a wasteful number, since it uses less digits than its factorization.

7940231031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45878.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 7940231031 is about 89107.9740034527. The cubic root of 7940231031 is about 1995.0067969191.

The spelling of 7940231031 in words is "seven billion, nine hundred forty million, two hundred thirty-one thousand, thirty-one".