31098012 has 24 divisors (see below), whose sum is σ = 79158912. Its totient is φ = 9423600.

The previous prime is 31097999. The next prime is 31098013. The reversal of 31098012 is 21089013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31098013) 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, 117664 + ... + 117927.

It is an arithmetic number, because the mean of its divisors is an integer number (3298288).

Almost surely, 2^31098012 is an apocalyptic number.

It is an amenable number.

31098012 is an abundant number, since it is smaller than the sum of its proper divisors (48060900).

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

31098012 is a wasteful number, since it uses less digits than its factorization.

31098012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235609 (or 235607 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 31098012 is about 5576.5591541738. The cubic root of 31098012 is about 314.4687846834.

The spelling of 31098012 in words is "thirty-one million, ninety-eight thousand, twelve".