31234411123 has 4 divisors (see below), whose sum is σ = 31234810840. Its totient is φ = 31234011408.

The previous prime is 31234411069. The next prime is 31234411127. The reversal of 31234411123 is 32111443213.

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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31234411123 is a prime.

It is a super-2 number, since 2×31234411123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31234411127) 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, 40053 + ... + 253126.

It is an arithmetic number, because the mean of its divisors is an integer number (7808702710).

Almost surely, 2^31234411123 is an apocalyptic number.

31234411123 is a deficient number, since it is larger than the sum of its proper divisors (399717).

31234411123 is a wasteful number, since it uses less digits than its factorization.

31234411123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399716.

The product of its digits is 1728, while the sum is 25.

Adding to 31234411123 its reverse (32111443213), we get a palindrome (63345854336).

The spelling of 31234411123 in words is "thirty-one billion, two hundred thirty-four million, four hundred eleven thousand, one hundred twenty-three".