31226666040 has 48 divisors (see below), whose sum is σ = 101486665800. Its totient is φ = 8327110848.

The previous prime is 31226665997. The next prime is 31226666083. The reversal of 31226666040 is 4066662213.

It is an interprime number because it is at equal distance from previous prime (31226665997) and next prime (31226666083).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 31226665986 and 31226666004.

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, 43370010 + ... + 43370729.

Almost surely, 2^31226666040 is an apocalyptic number.

31226666040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31226666040 is an abundant number, since it is smaller than the sum of its proper divisors (70259999760).

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

31226666040 is a wasteful number, since it uses less digits than its factorization.

31226666040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86740756 (or 86740749 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The spelling of 31226666040 in words is "thirty-one billion, two hundred twenty-six million, six hundred sixty-six thousand, forty".