3131537 has 2 divisors, whose sum is σ = 3131538. Its totient is φ = 3131536.

The previous prime is 3131503. The next prime is 3131549. The reversal of 3131537 is 7351313.

It is a happy number.

3131537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3066001 + 65536 = 1751^2 + 256^2 .

It is an emirp because it is prime and its reverse (7351313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3131537 - 2¹⁰ = 3130513 is a prime.

It is a Chen prime.

It is equal to p₂₂₅₆₂₆ and since 3131537 and 225626 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (3131137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565768 + 1565769.

It is an arithmetic number, because the mean of its divisors is an integer number (1565769).

Almost surely, 2^3131537 is an apocalyptic number.

It is an amenable number.

3131537 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131537 is an equidigital number, since it uses as much as digits as its factorization.

3131537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 945, while the sum is 23.

The square root of 3131537 is about 1769.6149298647. The cubic root of 3131537 is about 146.3027588648.

The spelling of 3131537 in words is "three million, one hundred thirty-one thousand, five hundred thirty-seven".