1131641293 has 2 divisors, whose sum is σ = 1131641294. Its totient is φ = 1131641292.

The previous prime is 1131641249. The next prime is 1131641297. The reversal of 1131641293 is 3921461311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1130169924 + 1471369 = 33618^2 + 1213^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131641293 - 2⁹ = 1131640781 is a prime.

It is a super-2 number, since 2×1131641293² = 2561224032045423698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131641297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565820646 + 565820647.

It is an arithmetic number, because the mean of its divisors is an integer number (565820647).

Almost surely, 2^1131641293 is an apocalyptic number.

It is an amenable number.

1131641293 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131641293 is an equidigital number, since it uses as much as digits as its factorization.

1131641293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 31.

The square root of 1131641293 is about 33639.8765306890. The cubic root of 1131641293 is about 1042.0844820447.

The spelling of 1131641293 in words is "one billion, one hundred thirty-one million, six hundred forty-one thousand, two hundred ninety-three".