31490324 has 12 divisors (see below), whose sum is σ = 58349844. Its totient is φ = 14818944.

The previous prime is 31490323. The next prime is 31490339. The reversal of 31490324 is 42309413.

It can be written as a sum of positive squares in 2 ways, for example, as 11971600 + 19518724 = 3460^2 + 4418^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31490293 and 31490302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31490323) 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, 231479 + ... + 231614.

It is an arithmetic number, because the mean of its divisors is an integer number (4862487).

Almost surely, 2^31490324 is an apocalyptic number.

31490324 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

31490324 is a deficient number, since it is larger than the sum of its proper divisors (26859520).

31490324 is a wasteful number, since it uses less digits than its factorization.

31490324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463114 (or 463112 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 31490324 is about 5611.6240073619. The cubic root of 31490324 is about 315.7856394837.

Adding to 31490324 its reverse (42309413), we get a palindrome (73799737).

The spelling of 31490324 in words is "thirty-one million, four hundred ninety thousand, three hundred twenty-four".