431290136849 has 16 divisors (see below), whose sum is σ = 506715943104. Its totient is φ = 361903627200.

The previous prime is 431290136831. The next prime is 431290136957. The reversal of 431290136849 is 948631092134.

It is a cyclic number.

It is not a de Polignac number, because 431290136849 - 2³² = 426995169553 is a prime.

It is a super-2 number, since 2×431290136849² (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 = 431290136797 and 431290136806.

It is not an unprimeable number, because it can be changed into a prime (431290136819) 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, 3311339 + ... + 3439119.

It is an arithmetic number, because the mean of its divisors is an integer number (31669746444).

Almost surely, 2^431290136849 is an apocalyptic number.

It is an amenable number.

431290136849 is a deficient number, since it is larger than the sum of its proper divisors (75425806255).

431290136849 is a wasteful number, since it uses less digits than its factorization.

431290136849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151408.

The product of its (nonzero) digits is 1119744, while the sum is 50.

The spelling of 431290136849 in words is "four hundred thirty-one billion, two hundred ninety million, one hundred thirty-six thousand, eight hundred forty-nine".