13402423321431 has 8 divisors (see below), whose sum is σ = 17870175851520. Its totient is φ = 8934809836152.

The previous prime is 13402423321421. The next prime is 13402423321457. The reversal of 13402423321431 is 13412332420431.

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

It is not a de Polignac number, because 13402423321431 - 2⁷ = 13402423321303 is a prime.

It is a super-2 number, since 2×13402423321431² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13402423321392 and 13402423321401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13402423321421) 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, 34536085 + ... + 34921998.

It is an arithmetic number, because the mean of its divisors is an integer number (2233771981440).

Almost surely, 2^{13402423321431} is an apocalyptic number.

13402423321431 is a deficient number, since it is larger than the sum of its proper divisors (4467752530089).

13402423321431 is an equidigital number, since it uses as much as digits as its factorization.

13402423321431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69522405.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 13402423321431 its reverse (13412332420431), we get a palindrome (26814755741862).

The spelling of 13402423321431 in words is "thirteen trillion, four hundred two billion, four hundred twenty-three million, three hundred twenty-one thousand, four hundred thirty-one".