405280783136231 has 4 divisors (see below), whose sum is σ = 405596668393272. Its totient is φ = 404964897879192.

The previous prime is 405280783136213. The next prime is 405280783136249. The reversal of 405280783136231 is 132631387082504.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (405280783136213) and next prime (405280783136249).

It is a cyclic number.

It is not a de Polignac number, because 405280783136231 - 2⁴² = 400882736625127 is a prime.

It is a super-2 number, since 2×405280783136231² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405280783136531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157942626596 + ... + 157942629161.

It is an arithmetic number, because the mean of its divisors is an integer number (101399167098318).

Almost surely, 2^{405280783136231} is an apocalyptic number.

405280783136231 is a deficient number, since it is larger than the sum of its proper divisors (315885257041).

405280783136231 is a wasteful number, since it uses less digits than its factorization.

405280783136231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315885257040.

The product of its (nonzero) digits is 5806080, while the sum is 53.

The spelling of 405280783136231 in words is "four hundred five trillion, two hundred eighty billion, seven hundred eighty-three million, one hundred thirty-six thousand, two hundred thirty-one".