31230432123 has 16 divisors (see below), whose sum is σ = 45450070272. Its totient is φ = 18917540000.

The previous prime is 31230432119. The next prime is 31230432127. The reversal of 31230432123 is 32123403213.

It is an interprime number because it is at equal distance from previous prime (31230432119) and next prime (31230432127).

It is a cyclic number.

It is not a de Polignac number, because 31230432123 - 2² = 31230432119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31230432093 and 31230432102.

It is not an unprimeable number, because it can be changed into a prime (31230432127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186183 + ... + 311648.

It is an arithmetic number, because the mean of its divisors is an integer number (2840629392).

Almost surely, 2^31230432123 is an apocalyptic number.

31230432123 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

31230432123 is a deficient number, since it is larger than the sum of its proper divisors (14219638149).

31230432123 is a wasteful number, since it uses less digits than its factorization.

31230432123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499746.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 31230432123 its reverse (32123403213), we get a palindrome (63353835336).

The spelling of 31230432123 in words is "thirty-one billion, two hundred thirty million, four hundred thirty-two thousand, one hundred twenty-three".