31140412 has 6 divisors (see below), whose sum is σ = 54495728. Its totient is φ = 15570204.

The previous prime is 31140409. The next prime is 31140419. The reversal of 31140412 is 21404113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31140419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3892548 + ... + 3892555.

Almost surely, 2^31140412 is an apocalyptic number.

It is an amenable number.

31140412 is a deficient number, since it is larger than the sum of its proper divisors (23355316).

31140412 is a wasteful number, since it uses less digits than its factorization.

31140412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7785107 (or 7785105 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 31140412 is about 5580.3594866281. The cubic root of 31140412 is about 314.6116386306.

Adding to 31140412 its reverse (21404113), we get a palindrome (52544525).

The spelling of 31140412 in words is "thirty-one million, one hundred forty thousand, four hundred twelve".