31197030 has 16 divisors (see below), whose sum is σ = 74872944. Its totient is φ = 8319200.

The previous prime is 31197007. The next prime is 31197077. The reversal of 31197030 is 3079113.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 519921 + ... + 519980.

It is an arithmetic number, because the mean of its divisors is an integer number (4679559).

Almost surely, 2^31197030 is an apocalyptic number.

31197030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31197030 is an abundant number, since it is smaller than the sum of its proper divisors (43675914).

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

31197030 is a wasteful number, since it uses less digits than its factorization.

31197030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039911.

The product of its (nonzero) digits is 567, while the sum is 24.

The square root of 31197030 is about 5585.4301535334. The cubic root of 31197030 is about 314.8021937766.

The spelling of 31197030 in words is "thirty-one million, one hundred ninety-seven thousand, thirty".