40477023431 has 4 divisors (see below), whose sum is σ = 43590640632. Its totient is φ = 37363406232.

The previous prime is 40477023413. The next prime is 40477023463. The reversal of 40477023431 is 13432077404.

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

It is a cyclic number.

It is not a de Polignac number, because 40477023431 - 2²² = 40472829127 is a prime.

It is a super-2 number, since 2×40477023431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40477023391 and 40477023400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40477023401) 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, 1556808581 + ... + 1556808606.

It is an arithmetic number, because the mean of its divisors is an integer number (10897660158).

Almost surely, 2^40477023431 is an apocalyptic number.

40477023431 is a deficient number, since it is larger than the sum of its proper divisors (3113617201).

40477023431 is a wasteful number, since it uses less digits than its factorization.

40477023431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3113617200.

The product of its (nonzero) digits is 56448, while the sum is 35.

The spelling of 40477023431 in words is "forty billion, four hundred seventy-seven million, twenty-three thousand, four hundred thirty-one".