31402136401 has 8 divisors (see below), whose sum is σ = 32021885984. Its totient is φ = 30786829920.

The previous prime is 31402136383. The next prime is 31402136429. The reversal of 31402136401 is 10463120413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31402136401 - 2²⁹ = 30865265489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31402136431) 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, 1096500 + ... + 1124773.

It is an arithmetic number, because the mean of its divisors is an integer number (4002735748).

Almost surely, 2^31402136401 is an apocalyptic number.

It is an amenable number.

31402136401 is a deficient number, since it is larger than the sum of its proper divisors (619749583).

31402136401 is a wasteful number, since it uses less digits than its factorization.

31402136401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221551.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 31402136401 its reverse (10463120413), we get a palindrome (41865256814).

The spelling of 31402136401 in words is "thirty-one billion, four hundred two million, one hundred thirty-six thousand, four hundred one".