31011412 has 6 divisors (see below), whose sum is σ = 54269978. Its totient is φ = 15505704.

The previous prime is 31011391. The next prime is 31011437. The reversal of 31011412 is 21411013.

It can be written as a sum of positive squares in only one way, i.e., 27499536 + 3511876 = 5244^2 + 1874^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31011392 and 31011401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3876423 + ... + 3876430.

Almost surely, 2^31011412 is an apocalyptic number.

It is an amenable number.

31011412 is a deficient number, since it is larger than the sum of its proper divisors (23258566).

31011412 is a wasteful number, since it uses less digits than its factorization.

31011412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7752857 (or 7752855 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 31011412 is about 5568.7890963835. The cubic root of 31011412 is about 314.1766082906.

Adding to 31011412 its reverse (21411013), we get a palindrome (52422425).

The spelling of 31011412 in words is "thirty-one million, eleven thousand, four hundred twelve".