31490322 has 16 divisors (see below), whose sum is σ = 63078912. Its totient is φ = 10480400.

The previous prime is 31490299. The next prime is 31490323. The reversal of 31490322 is 22309413.

It is a junction number, because it is equal to n+sod(n) for n = 31490292 and 31490301.

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 7 ways as a sum of consecutive naturals, for example, 463 + ... + 7949.

It is an arithmetic number, because the mean of its divisors is an integer number (3942432).

Almost surely, 2^31490322 is an apocalyptic number.

31490322 is an abundant number, since it is smaller than the sum of its proper divisors (31588590).

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

31490322 is a wasteful number, since it uses less digits than its factorization.

31490322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8193.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 31490322 is about 5611.6238291603. The cubic root of 31490322 is about 315.7856327983.

Adding to 31490322 its reverse (22309413), we get a palindrome (53799735).

The spelling of 31490322 in words is "thirty-one million, four hundred ninety thousand, three hundred twenty-two".