403020031013 has 4 divisors (see below), whose sum is σ = 403021327980. Its totient is φ = 403018734048.

The previous prime is 403020030983. The next prime is 403020031031. The reversal of 403020031013 is 310130020304.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 321990423364 + 81029607649 = 567442^2 + 284657^2 .

It is a cyclic number.

It is not a de Polignac number, because 403020031013 - 2⁶ = 403020030949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 403020030982 and 403020031000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403020031213) 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, 125753 + ... + 906561.

It is an arithmetic number, because the mean of its divisors is an integer number (100755331995).

Almost surely, 2^403020031013 is an apocalyptic number.

It is an amenable number.

403020031013 is a deficient number, since it is larger than the sum of its proper divisors (1296967).

403020031013 is an equidigital number, since it uses as much as digits as its factorization.

403020031013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296966.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 403020031013 its reverse (310130020304), we get a palindrome (713150051317).

The spelling of 403020031013 in words is "four hundred three billion, twenty million, thirty-one thousand, thirteen".