1361264331 has 16 divisors (see below), whose sum is σ = 2092667904. Its totient is φ = 770980224.

The previous prime is 1361264323. The next prime is 1361264339. The reversal of 1361264331 is 1334621631.

It is an interprime number because it is at equal distance from previous prime (1361264323) and next prime (1361264339).

It is not a de Polignac number, because 1361264331 - 2³ = 1361264323 is a prime.

It is a super-2 number, since 2×1361264331² = 3706081157705755122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1361264339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284451 + ... + 289196.

It is an arithmetic number, because the mean of its divisors is an integer number (130791744).

Almost surely, 2^1361264331 is an apocalyptic number.

1361264331 is a deficient number, since it is larger than the sum of its proper divisors (731403573).

1361264331 is a wasteful number, since it uses less digits than its factorization.

1361264331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573770.

The product of its digits is 7776, while the sum is 30.

The square root of 1361264331 is about 36895.3158409032. The cubic root of 1361264331 is about 1108.2748764666.

Adding to 1361264331 its reverse (1334621631), we get a palindrome (2695885962).

The spelling of 1361264331 in words is "one billion, three hundred sixty-one million, two hundred sixty-four thousand, three hundred thirty-one".