5431690 has 36 divisors (see below), whose sum is σ = 10909458. Its totient is φ = 1945680.

The previous prime is 5431661. The next prime is 5431691. The reversal of 5431690 is 961345.

It can be written as a sum of positive squares in only one way, i.e., 4888521 + 543169 = 2211^2 + 737^2 .

It is a super-2 number, since 2×5431690² = 59006512512200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5431691) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 81037 + ... + 81103.

Almost surely, 2^5431690 is an apocalyptic number.

5431690 is an abundant number, since it is smaller than the sum of its proper divisors (5477768).

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

5431690 is a wasteful number, since it uses less digits than its factorization.

5431690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163 (or 85 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 5431690 is about 2330.5986355441. The cubic root of 5431690 is about 175.7835881730.

Multiplying 5431690 by its product of nonzero digits (3240), we get a square (17598675600 = 132660²).

The spelling of 5431690 in words is "five million, four hundred thirty-one thousand, six hundred ninety".