1331054761 has 4 divisors (see below), whose sum is σ = 1367029252. Its totient is φ = 1295080272.

The previous prime is 1331054749. The next prime is 1331054783. The reversal of 1331054761 is 1674501331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 531579136 + 799475625 = 23056^2 + 28275^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331054761 - 2²³ = 1322666153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331054701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17987190 + ... + 17987263.

It is an arithmetic number, because the mean of its divisors is an integer number (341757313).

Almost surely, 2^1331054761 is an apocalyptic number.

It is an amenable number.

1331054761 is a deficient number, since it is larger than the sum of its proper divisors (35974491).

1331054761 is an equidigital number, since it uses as much as digits as its factorization.

1331054761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35974490.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 1331054761 is about 36483.6231890420. The cubic root of 1331054761 is about 1100.0150854680.

The spelling of 1331054761 in words is "one billion, three hundred thirty-one million, fifty-four thousand, seven hundred sixty-one".