2913231 has 4 divisors (see below), whose sum is σ = 3884312. Its totient is φ = 1942152.

The previous prime is 2913223. The next prime is 2913233. The reversal of 2913231 is 1323192.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2913231 - 2³ = 2913223 is a prime.

It is a super-2 number, since 2×2913231² = 16973829718722, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2913198 and 2913207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2913233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485536 + ... + 485541.

It is an arithmetic number, because the mean of its divisors is an integer number (971078).

2^2913231 is an apocalyptic number.

2913231 is a deficient number, since it is larger than the sum of its proper divisors (971081).

2913231 is an equidigital number, since it uses as much as digits as its factorization.

2913231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971080.

The product of its digits is 324, while the sum is 21.

The square root of 2913231 is about 1706.8189710687. The cubic root of 2913231 is about 142.8208590233.

The spelling of 2913231 in words is "two million, nine hundred thirteen thousand, two hundred thirty-one".