1013131524661 has 4 divisors (see below), whose sum is σ = 1013446458412. Its totient is φ = 1012816590912.

The previous prime is 1013131524437. The next prime is 1013131524667. The reversal of 1013131524661 is 1664251313101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 528950744100 + 484180780561 = 727290^2 + 695831^2 .

It is a cyclic number.

It is not a de Polignac number, because 1013131524661 - 2¹⁵ = 1013131491893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013131524667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157462050 + ... + 157468483.

It is an arithmetic number, because the mean of its divisors is an integer number (253361614603).

Almost surely, 2^{1013131524661} is an apocalyptic number.

It is an amenable number.

1013131524661 is a deficient number, since it is larger than the sum of its proper divisors (314933751).

1013131524661 is an equidigital number, since it uses as much as digits as its factorization.

1013131524661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314933750.

The product of its (nonzero) digits is 12960, while the sum is 34.

Adding to 1013131524661 its reverse (1664251313101), we get a palindrome (2677382837762).

The spelling of 1013131524661 in words is "one trillion, thirteen billion, one hundred thirty-one million, five hundred twenty-four thousand, six hundred sixty-one".