123031400123455 has 8 divisors (see below), whose sum is σ = 147639762293904. Its totient is φ = 98423732001600.

The previous prime is 123031400123453. The next prime is 123031400123497. The reversal of 123031400123455 is 554321004130321.

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

It is not a de Polignac number, because 123031400123455 - 2¹ = 123031400123453 is a prime.

It is a super-2 number, since 2×123031400123455² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123031400123455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123031400123453) 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, 173122081 + ... + 173831290.

It is an arithmetic number, because the mean of its divisors is an integer number (18454970286738).

Almost surely, 2^{123031400123455} is an apocalyptic number.

123031400123455 is a deficient number, since it is larger than the sum of its proper divisors (24608362170449).

123031400123455 is an equidigital number, since it uses as much as digits as its factorization.

123031400123455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347024297.

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 123031400123455 its reverse (554321004130321), we get a palindrome (677352404253776).

The spelling of 123031400123455 in words is "one hundred twenty-three trillion, thirty-one billion, four hundred million, one hundred twenty-three thousand, four hundred fifty-five".