7131217137 has 64 divisors (see below), whose sum is σ = 11727783936. Its totient is φ = 3800079360.

The previous prime is 7131217127. The next prime is 7131217141. The reversal of 7131217137 is 7317121317.

It is not a de Polignac number, because 7131217137 - 2⁸ = 7131216881 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 7131217098 and 7131217107.

It is not an unprimeable number, because it can be changed into a prime (7131217127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 548403 + ... + 561255.

It is an arithmetic number, because the mean of its divisors is an integer number (183246624).

Almost surely, 2^7131217137 is an apocalyptic number.

It is an amenable number.

7131217137 is a deficient number, since it is larger than the sum of its proper divisors (4596566799).

7131217137 is a wasteful number, since it uses less digits than its factorization.

7131217137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12950.

The product of its digits is 6174, while the sum is 33.

The square root of 7131217137 is about 84446.5341917595. The cubic root of 7131217137 is about 1924.8100908510.

The spelling of 7131217137 in words is "seven billion, one hundred thirty-one million, two hundred seventeen thousand, one hundred thirty-seven".