31147130 has 32 divisors (see below), whose sum is σ = 64281600. Its totient is φ = 10644480.

The previous prime is 31147091. The next prime is 31147133. The reversal of 31147130 is 3174113.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31147133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30935 + ... + 31925.

It is an arithmetic number, because the mean of its divisors is an integer number (2008800).

Almost surely, 2^31147130 is an apocalyptic number.

31147130 is an abundant number, since it is smaller than the sum of its proper divisors (33134470).

31147130 is a wasteful number, since it uses less digits than its factorization.

31147130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 31147130 is about 5580.9613867147. The cubic root of 31147130 is about 314.6342609926.

The spelling of 31147130 in words is "thirty-one million, one hundred forty-seven thousand, one hundred thirty".