996131537 has 2 divisors, whose sum is σ = 996131538. Its totient is φ = 996131536.

The previous prime is 996131519. The next prime is 996131551. The reversal of 996131537 is 735131699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 904565776 + 91565761 = 30076^2 + 9569^2 .

It is a cyclic number.

It is not a de Polignac number, because 996131537 - 2²⁰ = 995082961 is a prime.

It is not a weakly prime, because it can be changed into another prime (996131557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498065768 + 498065769.

It is an arithmetic number, because the mean of its divisors is an integer number (498065769).

Almost surely, 2^996131537 is an apocalyptic number.

It is an amenable number.

996131537 is a deficient number, since it is larger than the sum of its proper divisors (1).

996131537 is an equidigital number, since it uses as much as digits as its factorization.

996131537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 153090, while the sum is 44.

The square root of 996131537 is about 31561.5515619876. The cubic root of 996131537 is about 998.7088459721.

The spelling of 996131537 in words is "nine hundred ninety-six million, one hundred thirty-one thousand, five hundred thirty-seven".