31623671145 has 16 divisors (see below), whose sum is σ = 55197680832. Its totient is φ = 15332688960.

The previous prime is 31623671141. The next prime is 31623671147. The reversal of 31623671145 is 54117632613.

It is not a de Polignac number, because 31623671145 - 2² = 31623671141 is a prime.

It is a super-2 number, since 2×31623671145² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31623671141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95829142 + ... + 95829471.

It is an arithmetic number, because the mean of its divisors is an integer number (3449855052).

Almost surely, 2^31623671145 is an apocalyptic number.

It is an amenable number.

31623671145 is a deficient number, since it is larger than the sum of its proper divisors (23574009687).

31623671145 is a wasteful number, since it uses less digits than its factorization.

31623671145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191658632.

The product of its digits is 90720, while the sum is 39.

The spelling of 31623671145 in words is "thirty-one billion, six hundred twenty-three million, six hundred seventy-one thousand, one hundred forty-five".