1461535131 has 16 divisors (see below), whose sum is σ = 2253936384. Its totient is φ = 825099744.

The previous prime is 1461535129. The next prime is 1461535133. The reversal of 1461535131 is 1315351641.

It is an interprime number because it is at equal distance from previous prime (1461535129) and next prime (1461535133).

It is not a de Polignac number, because 1461535131 - 2¹ = 1461535129 is a prime.

It is a super-2 number, since 2×1461535131² = 4272169878294374322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1461535133) 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, 417516 + ... + 421001.

It is an arithmetic number, because the mean of its divisors is an integer number (140871024).

Almost surely, 2^1461535131 is an apocalyptic number.

1461535131 is a deficient number, since it is larger than the sum of its proper divisors (792401253).

1461535131 is an equidigital number, since it uses as much as digits as its factorization.

1461535131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838610.

The product of its digits is 5400, while the sum is 30.

The square root of 1461535131 is about 38230.0291786444. The cubic root of 1461535131 is about 1134.8446632234.

Adding to 1461535131 its reverse (1315351641), we get a palindrome (2776886772).

The spelling of 1461535131 in words is "one billion, four hundred sixty-one million, five hundred thirty-five thousand, one hundred thirty-one".