31030020123 has 8 divisors (see below), whose sum is σ = 41418779136. Its totient is φ = 20663970600.

The previous prime is 31030020103. The next prime is 31030020149. The reversal of 31030020123 is 32102003013.

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

It is not a de Polignac number, because 31030020123 - 2¹³ = 31030011931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31030020103) 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, 5674183 + ... + 5679648.

It is an arithmetic number, because the mean of its divisors is an integer number (5177347392).

Almost surely, 2^31030020123 is an apocalyptic number.

31030020123 is a deficient number, since it is larger than the sum of its proper divisors (10388759013).

31030020123 is a wasteful number, since it uses less digits than its factorization.

31030020123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11354745.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 31030020123 its reverse (32102003013), we get a palindrome (63132023136).

The spelling of 31030020123 in words is "thirty-one billion, thirty million, twenty thousand, one hundred twenty-three".