31145060 has 24 divisors (see below), whose sum is σ = 65988216. Its totient is φ = 12346880.

The previous prime is 31145057. The next prime is 31145063. The reversal of 31145060 is 6054113.

It is an interprime number because it is at equal distance from previous prime (31145057) and next prime (31145063).

It can be written as a sum of positive squares in 4 ways, for example, as 30976 + 31114084 = 176^2 + 5578^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (31145063) 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, 4631 + ... + 9150.

It is an arithmetic number, because the mean of its divisors is an integer number (2749509).

Almost surely, 2^31145060 is an apocalyptic number.

It is an amenable number.

31145060 is an abundant number, since it is smaller than the sum of its proper divisors (34843156).

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

31145060 is a wasteful number, since it uses less digits than its factorization.

31145060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13903 (or 13901 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 31145060 is about 5580.7759317142. The cubic root of 31145060 is about 314.6272907694.

Adding to 31145060 its reverse (6054113), we get a palindrome (37199173).

The spelling of 31145060 in words is "thirty-one million, one hundred forty-five thousand, sixty".