1031202013 has 4 divisors (see below), whose sum is σ = 1032449760. Its totient is φ = 1029954268.

The previous prime is 1031201999. The next prime is 1031202017. The reversal of 1031202013 is 3102021301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1031202013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1031201984 and 1031202002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031202017) 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, 622633 + ... + 624286.

It is an arithmetic number, because the mean of its divisors is an integer number (258112440).

Almost surely, 2^1031202013 is an apocalyptic number.

It is an amenable number.

1031202013 is a deficient number, since it is larger than the sum of its proper divisors (1247747).

1031202013 is an equidigital number, since it uses as much as digits as its factorization.

1031202013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247746.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1031202013 is about 32112.3342813941. The cubic root of 1031202013 is about 1010.2943340450.

Adding to 1031202013 its reverse (3102021301), we get a palindrome (4133223314).

The spelling of 1031202013 in words is "one billion, thirty-one million, two hundred two thousand, thirteen".