402047000431 has 16 divisors (see below), whose sum is σ = 406039495680. Its totient is φ = 398077283520.

The previous prime is 402047000371. The next prime is 402047000437. The reversal of 402047000431 is 134000740204.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402047000431 is a prime.

It is a super-2 number, since 2×402047000431² (a number of 24 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 = 402047000396 and 402047000405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402047000437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70742716 + ... + 70748398.

It is an arithmetic number, because the mean of its divisors is an integer number (25377468480).

Almost surely, 2^402047000431 is an apocalyptic number.

402047000431 is a deficient number, since it is larger than the sum of its proper divisors (3992495249).

402047000431 is a wasteful number, since it uses less digits than its factorization.

With its successor (402047000432) it forms an eRAP, since the sums of their prime factors are consecutive (7566 and 7567).

402047000431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7566.

The product of its (nonzero) digits is 2688, while the sum is 25.

Adding to 402047000431 its reverse (134000740204), we get a palindrome (536047740635).

The spelling of 402047000431 in words is "four hundred two billion, forty-seven million, four hundred thirty-one", and thus it is an aban number.