1300001031 has 36 divisors (see below), whose sum is σ = 2205748272. Its totient is φ = 722732544.

The previous prime is 1300000991. The next prime is 1300001039. The reversal of 1300001031 is 1301000031.

It is not a de Polignac number, because 1300001031 - 2⁶ = 1300000967 is a prime.

It is a super-2 number, since 2×1300001031² = 3380005361202125922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1300001039) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 78711 + ... + 93783.

Almost surely, 2^1300001031 is an apocalyptic number.

1300001031 is a deficient number, since it is larger than the sum of its proper divisors (905747241).

1300001031 is a wasteful number, since it uses less digits than its factorization.

1300001031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15160 (or 15120 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 9.

The square root of 1300001031 is about 36055.5270520346. The cubic root of 1300001031 is about 1091.3931715805.

Adding to 1300001031 its reverse (1301000031), we get a palindrome (2601001062).

The spelling of 1300001031 in words is "one billion, three hundred million, one thousand, thirty-one".