123201201431 has 16 divisors (see below), whose sum is σ = 153781651968. Its totient is φ = 95888340000.

The previous prime is 123201201413. The next prime is 123201201433. The reversal of 123201201431 is 134102102321.

It is a cyclic number.

It is not a de Polignac number, because 123201201431 - 2²⁶ = 123134092567 is a prime.

It is a super-2 number, since 2×123201201431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123201201433) 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, 872195 + ... + 1003556.

It is an arithmetic number, because the mean of its divisors is an integer number (9611353248).

Almost surely, 2^123201201431 is an apocalyptic number.

123201201431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123201201431 is a deficient number, since it is larger than the sum of its proper divisors (30580450537).

123201201431 is a wasteful number, since it uses less digits than its factorization.

123201201431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1876622.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 123201201431 its reverse (134102102321), we get a palindrome (257303303752).

The spelling of 123201201431 in words is "one hundred twenty-three billion, two hundred one million, two hundred one thousand, four hundred thirty-one".