1013100031 has 4 divisors (see below), whose sum is σ = 1022065632. Its totient is φ = 1004134432.

The previous prime is 1013100019. The next prime is 1013100041. The reversal of 1013100031 is 1300013101.

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 1013100031 - 2¹³ = 1013091839 is a prime.

It is a super-2 number, since 2×1013100031² = 2052743345624401922, 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 = 1013099990 and 1013100017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013100041) 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, 4482631 + ... + 4482856.

It is an arithmetic number, because the mean of its divisors is an integer number (255516408).

Almost surely, 2^1013100031 is an apocalyptic number.

1013100031 is a deficient number, since it is larger than the sum of its proper divisors (8965601).

1013100031 is an equidigital number, since it uses as much as digits as its factorization.

1013100031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8965600.

The product of its (nonzero) digits is 9, while the sum is 10.

The square root of 1013100031 is about 31829.2323344438. The cubic root of 1013100031 is about 1004.3477467036.

Adding to 1013100031 its reverse (1300013101), we get a palindrome (2313113132).

The spelling of 1013100031 in words is "one billion, thirteen million, one hundred thousand, thirty-one".