31000005412 has 12 divisors (see below), whose sum is σ = 54269466496. Its totient is φ = 15494443560.

The previous prime is 31000005397. The next prime is 31000005419. The reversal of 31000005412 is 21450000013.

It is a super-4 number, since 4×31000005412⁴ (a number of 43 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (31000005419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1377228 + ... + 1399555.

Almost surely, 2^31000005412 is an apocalyptic number.

It is an amenable number.

31000005412 is a deficient number, since it is larger than the sum of its proper divisors (23269461084).

31000005412 is a wasteful number, since it uses less digits than its factorization.

31000005412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2779578 (or 2779576 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

Adding to 31000005412 its reverse (21450000013), we get a palindrome (52450005425).

The spelling of 31000005412 in words is "thirty-one billion, five thousand, four hundred twelve".