31298668 has 24 divisors (see below), whose sum is σ = 56331968. Its totient is φ = 15207696.

The previous prime is 31298647. The next prime is 31298689. The reversal of 31298668 is 86689213.

It is an interprime number because it is at equal distance from previous prime (31298647) and next prime (31298689).

It is a Harshad number since it is a multiple of its sum of digits (43).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48355 + ... + 48997.

Almost surely, 2^31298668 is an apocalyptic number.

It is an amenable number.

31298668 is a deficient number, since it is larger than the sum of its proper divisors (25033300).

31298668 is a wasteful number, since it uses less digits than its factorization.

31298668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973 (or 971 counting only the distinct ones).

The product of its digits is 124416, while the sum is 43.

The square root of 31298668 is about 5594.5212485073. The cubic root of 31298668 is about 315.1436918965.

It can be divided in two parts, 3129 and 8668, that multiplied together give a palindrome (27122172).

The spelling of 31298668 in words is "thirty-one million, two hundred ninety-eight thousand, six hundred sixty-eight".