31402323412 has 6 divisors (see below), whose sum is σ = 54954065978. Its totient is φ = 15701161704.

The previous prime is 31402323409. The next prime is 31402323451. The reversal of 31402323412 is 21432320413.

It can be written as a sum of positive squares in only one way, i.e., 30959810116 + 442513296 = 175954^2 + 21036^2 .

It is a super-2 number, since 2×31402323412² (a number of 22 digits) contains 22 as substring.

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, 3925290423 + ... + 3925290430.

Almost surely, 2^31402323412 is an apocalyptic number.

It is an amenable number.

31402323412 is a deficient number, since it is larger than the sum of its proper divisors (23551742566).

31402323412 is a wasteful number, since it uses less digits than its factorization.

31402323412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7850580857 (or 7850580855 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 31402323412 its reverse (21432320413), we get a palindrome (52834643825).

The spelling of 31402323412 in words is "thirty-one billion, four hundred two million, three hundred twenty-three thousand, four hundred twelve".