131020733 has 2 divisors, whose sum is σ = 131020734. Its totient is φ = 131020732.

The previous prime is 131020709. The next prime is 131020763. The reversal of 131020733 is 337020131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71453209 + 59567524 = 8453^2 + 7718^2 .

It is a cyclic number.

It is not a de Polignac number, because 131020733 - 2²² = 126826429 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131020763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65510366 + 65510367.

It is an arithmetic number, because the mean of its divisors is an integer number (65510367).

Almost surely, 2^131020733 is an apocalyptic number.

It is an amenable number.

131020733 is a deficient number, since it is larger than the sum of its proper divisors (1).

131020733 is an equidigital number, since it uses as much as digits as its factorization.

131020733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 131020733 is about 11446.4288317361. The cubic root of 131020733 is about 507.9020997301.

Adding to 131020733 its reverse (337020131), we get a palindrome (468040864).

The spelling of 131020733 in words is "one hundred thirty-one million, twenty thousand, seven hundred thirty-three".