431401112251 has 2 divisors, whose sum is σ = 431401112252. Its totient is φ = 431401112250.

The previous prime is 431401112249. The next prime is 431401112299. The reversal of 431401112251 is 152211104134.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 431401112251 - 2¹ = 431401112249 is a prime.

It is a super-2 number, since 2×431401112251² (a number of 24 digits) contains 22 as substring.

Together with 431401112249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (431401119251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215700556125 + 215700556126.

It is an arithmetic number, because the mean of its divisors is an integer number (215700556126).

Almost surely, 2^431401112251 is an apocalyptic number.

431401112251 is a deficient number, since it is larger than the sum of its proper divisors (1).

431401112251 is an equidigital number, since it uses as much as digits as its factorization.

431401112251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 431401112251 its reverse (152211104134), we get a palindrome (583612216385).

The spelling of 431401112251 in words is "four hundred thirty-one billion, four hundred one million, one hundred twelve thousand, two hundred fifty-one".