1260645131 has 4 divisors (see below), whose sum is σ = 1263517200. Its totient is φ = 1257773064.

The previous prime is 1260645049. The next prime is 1260645143. The reversal of 1260645131 is 1315460621.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1260645131 - 2¹⁸ = 1260382987 is a prime.

It is a super-2 number, since 2×1260645131² = 3178452292628014322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1260645094 and 1260645103.

It is not an unprimeable number, because it can be changed into a prime (1260645151) 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, 1435376 + ... + 1436253.

It is an arithmetic number, because the mean of its divisors is an integer number (315879300).

Almost surely, 2^1260645131 is an apocalyptic number.

1260645131 is a deficient number, since it is larger than the sum of its proper divisors (2872069).

1260645131 is an equidigital number, since it uses as much as digits as its factorization.

1260645131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2872068.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1260645131 is about 35505.5647891989. The cubic root of 1260645131 is about 1080.2666039922.

The spelling of 1260645131 in words is "one billion, two hundred sixty million, six hundred forty-five thousand, one hundred thirty-one".