31276940 has 48 divisors (see below), whose sum is σ = 70634592. Its totient is φ = 11590656.

The previous prime is 31276939. The next prime is 31276961. The reversal of 31276940 is 4967213.

It is a junction number, because it is equal to n+sod(n) for n = 31276897 and 31276906.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22094 + ... + 23466.

It is an arithmetic number, because the mean of its divisors is an integer number (1471554).

Almost surely, 2^31276940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31276940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35317296).

31276940 is an abundant number, since it is smaller than the sum of its proper divisors (39357652).

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

31276940 is a wasteful number, since it uses less digits than its factorization.

31276940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466 (or 1464 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 31276940 is about 5592.5790115116. The cubic root of 31276940 is about 315.0707492047.

The spelling of 31276940 in words is "thirty-one million, two hundred seventy-six thousand, nine hundred forty".