31103253111 has 8 divisors (see below), whose sum is σ = 47395433344. Its totient is φ = 17773287480.

The previous prime is 31103253109. The next prime is 31103253113. The reversal of 31103253111 is 11135230113.

It is an interprime number because it is at equal distance from previous prime (31103253109) and next prime (31103253113).

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

It is not a de Polignac number, because 31103253111 - 2¹ = 31103253109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1481107291 = 31103253111 / (3 + 1 + 1 + 0 + 3 + 2 + 5 + 3 + 1 + 1 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31103253113) 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, 740553625 + ... + 740553666.

It is an arithmetic number, because the mean of its divisors is an integer number (5924429168).

Almost surely, 2^31103253111 is an apocalyptic number.

31103253111 is a deficient number, since it is larger than the sum of its proper divisors (16292180233).

31103253111 is a wasteful number, since it uses less digits than its factorization.

31103253111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481107301.

The product of its (nonzero) digits is 270, while the sum is 21.

Adding to 31103253111 its reverse (11135230113), we get a palindrome (42238483224).

The spelling of 31103253111 in words is "thirty-one billion, one hundred three million, two hundred fifty-three thousand, one hundred eleven".