31103203413 has 8 divisors (see below), whose sum is σ = 41536662976. Its totient is φ = 20702606400.

The previous prime is 31103203399. The next prime is 31103203499. The reversal of 31103203413 is 31430230113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31103203413 - 2¹⁸ = 31102941269 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31103203413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31103203613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8213428 + ... + 8217213.

It is an arithmetic number, because the mean of its divisors is an integer number (5192082872).

Almost surely, 2^31103203413 is an apocalyptic number.

It is an amenable number.

31103203413 is a deficient number, since it is larger than the sum of its proper divisors (10433459563).

31103203413 is a wasteful number, since it uses less digits than its factorization.

31103203413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16431275.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31103203413 its reverse (31430230113), we get a palindrome (62533433526).

The spelling of 31103203413 in words is "thirty-one billion, one hundred three million, two hundred three thousand, four hundred thirteen".