31103130123311 has 4 divisors (see below), whose sum is σ = 31103186637432. Its totient is φ = 31103073609192.

The previous prime is 31103130123287. The next prime is 31103130123337. The reversal of 31103130123311 is 11332103130113.

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 31103130123311 - 2¹⁰ = 31103130122287 is a prime.

It is a super-2 number, since 2×31103130123311² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31103130123341) 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, 27423320 + ... + 28534973.

It is an arithmetic number, because the mean of its divisors is an integer number (7775796659358).

Almost surely, 2^{31103130123311} is an apocalyptic number.

31103130123311 is a deficient number, since it is larger than the sum of its proper divisors (56514121).

31103130123311 is an equidigital number, since it uses as much as digits as its factorization.

31103130123311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56514120.

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 31103130123311 its reverse (11332103130113), we get a palindrome (42435233253424).

The spelling of 31103130123311 in words is "thirty-one trillion, one hundred three billion, one hundred thirty million, one hundred twenty-three thousand, three hundred eleven".