31012406 has 16 divisors (see below), whose sum is σ = 47854800. Its totient is φ = 15067008.

The previous prime is 31012393. The next prime is 31012409. The reversal of 31012406 is 60421013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31012409) 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, 9026 + ... + 11978.

It is an arithmetic number, because the mean of its divisors is an integer number (2990925).

Almost surely, 2^31012406 is an apocalyptic number.

31012406 is a deficient number, since it is larger than the sum of its proper divisors (16842394).

31012406 is a wasteful number, since it uses less digits than its factorization.

31012406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3103.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 31012406 is about 5568.8783430777. The cubic root of 31012406 is about 314.1799649926.

Adding to 31012406 its reverse (60421013), we get a palindrome (91433419).

The spelling of 31012406 in words is "thirty-one million, twelve thousand, four hundred six".