1280931001 has 12 divisors (see below), whose sum is σ = 1490937600. Its totient is φ = 1097296200.

The previous prime is 1280930983. The next prime is 1280931007. The reversal of 1280931001 is 1001390821.

It is not a de Polignac number, because 1280931001 - 2¹¹ = 1280928953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1280931007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88900 + ... + 102298.

It is an arithmetic number, because the mean of its divisors is an integer number (124244800).

Almost surely, 2^1280931001 is an apocalyptic number.

It is an amenable number.

1280931001 is a deficient number, since it is larger than the sum of its proper divisors (210006599).

1280931001 is a wasteful number, since it uses less digits than its factorization.

1280931001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15364 (or 15357 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 1280931001 is about 35790.0964094818. The cubic root of 1280931001 is about 1086.0302250823.

The spelling of 1280931001 in words is "one billion, two hundred eighty million, nine hundred thirty-one thousand, one".