31101031123 has 8 divisors (see below), whose sum is σ = 32939898480. Its totient is φ = 29263207680.

The previous prime is 31101031103. The next prime is 31101031141. The reversal of 31101031123 is 32113010113.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31101031123 is a prime.

It is a super-2 number, since 2×31101031123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31101031097 and 31101031106.

It is not an unprimeable number, because it can be changed into a prime (31101031103) 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, 199213 + ... + 319198.

It is an arithmetic number, because the mean of its divisors is an integer number (4117487310).

Almost surely, 2^31101031123 is an apocalyptic number.

31101031123 is a deficient number, since it is larger than the sum of its proper divisors (1838867357).

31101031123 is a wasteful number, since it uses less digits than its factorization.

31101031123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521957.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 31101031123 its reverse (32113010113), we get a palindrome (63214041236).

The spelling of 31101031123 in words is "thirty-one billion, one hundred one million, thirty-one thousand, one hundred twenty-three".