31076940 has 24 divisors (see below), whose sum is σ = 87015600. Its totient is φ = 8287168.

The previous prime is 31076939. The next prime is 31076953. The reversal of 31076940 is 4967013.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 31076898 and 31076907.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258915 + ... + 259034.

It is an arithmetic number, because the mean of its divisors is an integer number (3625650).

Almost surely, 2^31076940 is an apocalyptic number.

31076940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31076940 is an abundant number, since it is smaller than the sum of its proper divisors (55938660).

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

31076940 is a wasteful number, since it uses less digits than its factorization.

31076940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517961 (or 517959 counting only the distinct ones).

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

The square root of 31076940 is about 5574.6694969298. The cubic root of 31076940 is about 314.3977406619.

The spelling of 31076940 in words is "thirty-one million, seventy-six thousand, nine hundred forty".