431420145 has 32 divisors (see below), whose sum is σ = 753578112. Its totient is φ = 209475072.

The previous prime is 431420123. The next prime is 431420167. The reversal of 431420145 is 541024134.

It is an interprime number because it is at equal distance from previous prime (431420123) and next prime (431420167).

It is not a de Polignac number, because 431420145 - 2¹² = 431416049 is a prime.

It is a super-2 number, since 2×431420145² = 372246683023642050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 919 + ... + 29388.

It is an arithmetic number, because the mean of its divisors is an integer number (23549316).

Almost surely, 2^431420145 is an apocalyptic number.

It is an amenable number.

431420145 is a deficient number, since it is larger than the sum of its proper divisors (322157967).

431420145 is a wasteful number, since it uses less digits than its factorization.

431420145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30401.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 431420145 is about 20770.6558635013. The cubic root of 431420145 is about 755.6142509388.

Adding to 431420145 its reverse (541024134), we get a palindrome (972444279).

The spelling of 431420145 in words is "four hundred thirty-one million, four hundred twenty thousand, one hundred forty-five".