31640480117 has 8 divisors (see below), whose sum is σ = 32440693824. Its totient is φ = 30843193248.

The previous prime is 31640480093. The next prime is 31640480141. The reversal of 31640480117 is 71108404613.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31640480093) and next prime (31640480141).

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 31640480117 - 2²⁶ = 31573371253 is a prime.

It is a super-2 number, since 2×31640480117² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31640480167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 709808 + ... + 753065.

It is an arithmetic number, because the mean of its divisors is an integer number (4055086728).

Almost surely, 2^31640480117 is an apocalyptic number.

It is an amenable number.

31640480117 is a deficient number, since it is larger than the sum of its proper divisors (800213707).

31640480117 is a wasteful number, since it uses less digits than its factorization.

31640480117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463419.

The product of its (nonzero) digits is 16128, while the sum is 35.

The spelling of 31640480117 in words is "thirty-one billion, six hundred forty million, four hundred eighty thousand, one hundred seventeen".