431401123 has 2 divisors, whose sum is σ = 431401124. Its totient is φ = 431401122.

The previous prime is 431401121. The next prime is 431401169. The reversal of 431401123 is 321104134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 431401123 - 2¹ = 431401121 is a prime.

It is a super-2 number, since 2×431401123² = 372213857851322258, which contains 22 as substring.

Together with 431401121, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 431401123.

It is not a weakly prime, because it can be changed into another prime (431401121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215700561 + 215700562.

It is an arithmetic number, because the mean of its divisors is an integer number (215700562).

Almost surely, 2^431401123 is an apocalyptic number.

431401123 is a deficient number, since it is larger than the sum of its proper divisors (1).

431401123 is an equidigital number, since it uses as much as digits as its factorization.

431401123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 431401123 is about 20770.1979528362. The cubic root of 431401123 is about 755.6031453644.

Adding to 431401123 its reverse (321104134), we get a palindrome (752505257).

The spelling of 431401123 in words is "four hundred thirty-one million, four hundred one thousand, one hundred twenty-three".