427231540431 has 72 divisors (see below), whose sum is σ = 662865695856. Its totient is φ = 265076375040.

The previous prime is 427231540427. The next prime is 427231540481. The reversal of 427231540431 is 134045132724.

427231540431 is a `hidden beast` number, since 4 + 2 + 72 + 3 + 1 + 540 + 43 + 1 = 666.

It is not a de Polignac number, because 427231540431 - 2² = 427231540427 is a prime.

It is a super-2 number, since 2×427231540431² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427231540481) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 48805351 + ... + 48814103.

It is an arithmetic number, because the mean of its divisors is an integer number (9206467998).

Almost surely, 2^427231540431 is an apocalyptic number.

427231540431 is a deficient number, since it is larger than the sum of its proper divisors (235634155425).

427231540431 is a wasteful number, since it uses less digits than its factorization.

427231540431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9061 (or 9039 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The spelling of 427231540431 in words is "four hundred twenty-seven billion, two hundred thirty-one million, five hundred forty thousand, four hundred thirty-one".