31112123 has 8 divisors (see below), whose sum is σ = 37102848. Its totient is φ = 25507944.

The previous prime is 31112119. The next prime is 31112131. The reversal of 31112123 is 32121113.

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

It is not a de Polignac number, because 31112123 - 2² = 31112119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31112098 and 31112107.

It is not an unprimeable number, because it can be changed into a prime (31112143) 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, 96461 + ... + 96782.

It is an arithmetic number, because the mean of its divisors is an integer number (4637856).

Almost surely, 2^31112123 is an apocalyptic number.

31112123 is a deficient number, since it is larger than the sum of its proper divisors (5990725).

31112123 is a wasteful number, since it uses less digits than its factorization.

31112123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193273.

The product of its digits is 36, while the sum is 14.

The square root of 31112123 is about 5577.8242173808. The cubic root of 31112123 is about 314.5163418285.

Adding to 31112123 its reverse (32121113), we get a palindrome (63233236).

The spelling of 31112123 in words is "thirty-one million, one hundred twelve thousand, one hundred twenty-three".