31061412 has 36 divisors (see below), whose sum is σ = 78763776. Its totient is φ = 10321200.

The previous prime is 31061399. The next prime is 31061413. The reversal of 31061412 is 21416013.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×31061412² = 1929622630867488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (31061413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12037 + ... + 14387.

Almost surely, 2^31061412 is an apocalyptic number.

It is an amenable number.

31061412 is an abundant number, since it is smaller than the sum of its proper divisors (47702364).

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

31061412 is a wasteful number, since it uses less digits than its factorization.

31061412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2728 (or 2723 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 31061412 is about 5573.2765946075. The cubic root of 31061412 is about 314.3453676220.

Adding to 31061412 its reverse (21416013), we get a palindrome (52477425).

The spelling of 31061412 in words is "thirty-one million, sixty-one thousand, four hundred twelve".