331430020302431 has 8 divisors (see below), whose sum is σ = 347198624500800. Its totient is φ = 315950748291360.

The previous prime is 331430020302361. The next prime is 331430020302481. The reversal of 331430020302431 is 134203020034133.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331430020302431 is a prime.

It is a super-2 number, since 2×331430020302431² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331430020302394 and 331430020302403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331430020302481) 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, 72333044480 + ... + 72333049061.

It is an arithmetic number, because the mean of its divisors is an integer number (43399828062600).

Almost surely, 2^{331430020302431} is an apocalyptic number.

331430020302431 is a deficient number, since it is larger than the sum of its proper divisors (15768604198369).

331430020302431 is a wasteful number, since it uses less digits than its factorization.

331430020302431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144666093649.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 331430020302431 its reverse (134203020034133), we get a palindrome (465633040336564).

The spelling of 331430020302431 in words is "three hundred thirty-one trillion, four hundred thirty billion, twenty million, three hundred two thousand, four hundred thirty-one".