40102312031 has 4 divisors (see below), whose sum is σ = 40114398000. Its totient is φ = 40090226064.

The previous prime is 40102312013. The next prime is 40102312069. The reversal of 40102312031 is 13021320104.

40102312031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40102312031 is a prime.

It is a super-2 number, since 2×40102312031² (a number of 22 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 (40102342031) 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, 6038006 + ... + 6044643.

It is an arithmetic number, because the mean of its divisors is an integer number (10028599500).

Almost surely, 2^40102312031 is an apocalyptic number.

40102312031 is a deficient number, since it is larger than the sum of its proper divisors (12085969).

40102312031 is a wasteful number, since it uses less digits than its factorization.

40102312031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12085968.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 40102312031 its reverse (13021320104), we get a palindrome (53123632135).

The spelling of 40102312031 in words is "forty billion, one hundred two million, three hundred twelve thousand, thirty-one".