31190032449 has 63 divisors (see below), whose sum is σ = 48550916817. Its totient is φ = 20027233800.

The previous prime is 31190032421. The next prime is 31190032451. The reversal of 31190032449 is 94423009113.

The square root of 31190032449 is 176607.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 31190032449 - 2¹¹ = 31190030401 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31190032249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 147819954 + ... + 147820164.

Almost surely, 2^31190032449 is an apocalyptic number.

31190032449 is the 176607-th square number.

31190032449 is the 88304-th centered octagonal number.

It is an amenable number.

31190032449 is a deficient number, since it is larger than the sum of its proper divisors (17360884368).

31190032449 is an frugal number, since it uses more digits than its factorization.

31190032449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

Multiplying 31190032449 by its sum of digits (36), we get a square (1122841168164 = 1059642²).

The spelling of 31190032449 in words is "thirty-one billion, one hundred ninety million, thirty-two thousand, four hundred forty-nine".