31040126040 has 192 divisors, whose sum is σ = 118171560960. Its totient is φ = 6449882880.

The previous prime is 31040126027. The next prime is 31040126057. The reversal of 31040126040 is 4062104013.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 31040125998 and 31040126016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 175272 + ... + 304631.

It is an arithmetic number, because the mean of its divisors is an integer number (615476880).

Almost surely, 2^31040126040 is an apocalyptic number.

31040126040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31040126040 is an abundant number, since it is smaller than the sum of its proper divisors (87131434920).

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

31040126040 is a wasteful number, since it uses less digits than its factorization.

31040126040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479942 (or 479931 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

It can be divided in two parts, 31040 and 126040, that added together give a triangular number (157080 = T₅₆₀).

The spelling of 31040126040 in words is "thirty-one billion, forty million, one hundred twenty-six thousand, forty".