31004100123 has 8 divisors (see below), whose sum is σ = 41339675136. Its totient is φ = 20668962600.

The previous prime is 31004100067. The next prime is 31004100131. The reversal of 31004100123 is 32100140013.

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

It is not a de Polignac number, because 31004100123 - 2¹⁶ = 31004034587 is a prime.

It is a super-2 number, since 2×31004100123² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31004100223) 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, 132238 + ... + 281948.

It is an arithmetic number, because the mean of its divisors is an integer number (5167459392).

Almost surely, 2^31004100123 is an apocalyptic number.

31004100123 is a deficient number, since it is larger than the sum of its proper divisors (10335575013).

31004100123 is a wasteful number, since it uses less digits than its factorization.

31004100123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218745.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31004100123 its reverse (32100140013), we get a palindrome (63104240136).

The spelling of 31004100123 in words is "thirty-one billion, four million, one hundred thousand, one hundred twenty-three".