2931390 has 160 divisors (see below), whose sum is σ = 10036224. Its totient is φ = 596160.

The previous prime is 2931319. The next prime is 2931413. The reversal of 2931390 is 931392.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 62347 + ... + 62393.

2^2931390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2931390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5018112).

2931390 is an abundant number, since it is smaller than the sum of its proper divisors (7104834).

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

2931390 is a wasteful number, since it uses less digits than its factorization.

2931390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 2931390 is about 1712.1302520544. The cubic root of 2931390 is about 143.1169922994.

It can be divided in two parts, 29313 and 90, that added together give a triangular number (29403 = T₂₄₂).

The spelling of 2931390 in words is "two million, nine hundred thirty-one thousand, three hundred ninety".