1260785431 has 8 divisors (see below), whose sum is σ = 1286246384. Its totient is φ = 1235520000.

The previous prime is 1260785429. The next prime is 1260785447. The reversal of 1260785431 is 1345870621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1260785431 - 2¹ = 1260785429 is a prime.

It is a super-2 number, since 2×1260785431² = 3179159806043711522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1260785401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35820 + ... + 61681.

It is an arithmetic number, because the mean of its divisors is an integer number (160780798).

Almost surely, 2^1260785431 is an apocalyptic number.

1260785431 is a deficient number, since it is larger than the sum of its proper divisors (25460953).

1260785431 is an equidigital number, since it uses as much as digits as its factorization.

1260785431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97761.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 1260785431 is about 35507.5404808612. The cubic root of 1260785431 is about 1080.3066775964.

The spelling of 1260785431 in words is "one billion, two hundred sixty million, seven hundred eighty-five thousand, four hundred thirty-one".