1361771431 has 2 divisors, whose sum is σ = 1361771432. Its totient is φ = 1361771430.

The previous prime is 1361771407. The next prime is 1361771459. The reversal of 1361771431 is 1341771631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1361771431 - 2⁵ = 1361771399 is a prime.

It is a super-2 number, since 2×1361771431² = 3708842860575575522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1361771471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680885715 + 680885716.

It is an arithmetic number, because the mean of its divisors is an integer number (680885716).

Almost surely, 2^1361771431 is an apocalyptic number.

1361771431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361771431 is an equidigital number, since it uses as much as digits as its factorization.

1361771431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10584, while the sum is 34.

The square root of 1361771431 is about 36902.1873470937. The cubic root of 1361771431 is about 1108.4124780588.

The spelling of 1361771431 in words is "one billion, three hundred sixty-one million, seven hundred seventy-one thousand, four hundred thirty-one".