31243148 has 12 divisors (see below), whose sum is σ = 56009352. Its totient is φ = 15240480.

The previous prime is 31243141. The next prime is 31243151. The reversal of 31243148 is 84134213.

It is a super-2 number, since 2×31243148² = 1952268593899808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31243141) 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, 95090 + ... + 95417.

It is an arithmetic number, because the mean of its divisors is an integer number (4667446).

Almost surely, 2^31243148 is an apocalyptic number.

It is an amenable number.

31243148 is a deficient number, since it is larger than the sum of its proper divisors (24766204).

31243148 is a wasteful number, since it uses less digits than its factorization.

31243148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190552 (or 190550 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 31243148 is about 5589.5570486399. The cubic root of 31243148 is about 314.9572395135.

The spelling of 31243148 in words is "thirty-one million, two hundred forty-three thousand, one hundred forty-eight".