142403320031 has 32 divisors (see below), whose sum is σ = 177469636608. Its totient is φ = 111611253600.

The previous prime is 142403319991. The next prime is 142403320051. The reversal of 142403320031 is 130023304241.

It is a de Polignac number, because none of the positive numbers 2^k-142403320031 is a prime.

It is a super-2 number, since 2×142403320031² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142403319979 and 142403320006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142403320051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106556 + ... + 544206.

It is an arithmetic number, because the mean of its divisors is an integer number (5545926144).

Almost surely, 2^142403320031 is an apocalyptic number.

142403320031 is a deficient number, since it is larger than the sum of its proper divisors (35066316577).

142403320031 is a wasteful number, since it uses less digits than its factorization.

142403320031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437771.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 142403320031 its reverse (130023304241), we get a palindrome (272426624272).

The spelling of 142403320031 in words is "one hundred forty-two billion, four hundred three million, three hundred twenty thousand, thirty-one".