31406488838 has 8 divisors (see below), whose sum is σ = 47112925320. Its totient is φ = 15702180400.

The previous prime is 31406488837. The next prime is 31406488847. The reversal of 31406488838 is 83888460413.

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

It is a super-2 number, since 2×31406488838² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31406488838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31406488837) 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, 494588 + ... + 554463.

It is an arithmetic number, because the mean of its divisors is an integer number (5889115665).

Almost surely, 2^31406488838 is an apocalyptic number.

31406488838 is a deficient number, since it is larger than the sum of its proper divisors (15706436482).

31406488838 is a wasteful number, since it uses less digits than its factorization.

31406488838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064022.

The product of its (nonzero) digits is 3538944, while the sum is 53.

The spelling of 31406488838 in words is "thirty-one billion, four hundred six million, four hundred eighty-eight thousand, eight hundred thirty-eight".