1331013077 has 2 divisors, whose sum is σ = 1331013078. Its totient is φ = 1331013076.

The previous prime is 1331013017. The next prime is 1331013097. The reversal of 1331013077 is 7703101331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1200345316 + 130667761 = 34646^2 + 11431^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331013077 - 2¹⁸ = 1330750933 is a prime.

It is a super-2 number, since 2×1331013077² = 3543191622290015858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331013007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665506538 + 665506539.

It is an arithmetic number, because the mean of its divisors is an integer number (665506539).

Almost surely, 2^1331013077 is an apocalyptic number.

It is an amenable number.

1331013077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331013077 is an equidigital number, since it uses as much as digits as its factorization.

1331013077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1323, while the sum is 26.

The square root of 1331013077 is about 36483.0519145534. The cubic root of 1331013077 is about 1100.0036024675.

The spelling of 1331013077 in words is "one billion, three hundred thirty-one million, thirteen thousand, seventy-seven".