431513145 has 24 divisors (see below), whose sum is σ = 854807616. Its totient is φ = 197263008.

The previous prime is 431513101. The next prime is 431513167. The reversal of 431513145 is 541315134.

It is a happy number.

431513145 is a `hidden beast` number, since 4 + 3 + 1 + 513 + 145 = 666.

It is not a de Polignac number, because 431513145 - 2¹⁶ = 431447609 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 684627 + ... + 685256.

It is an arithmetic number, because the mean of its divisors is an integer number (35616984).

Almost surely, 2^431513145 is an apocalyptic number.

431513145 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

431513145 is a deficient number, since it is larger than the sum of its proper divisors (423294471).

431513145 is a wasteful number, since it uses less digits than its factorization.

431513145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369901 (or 1369898 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 431513145 is about 20772.8944781415. The cubic root of 431513145 is about 755.6685422349.

Adding to 431513145 its reverse (541315134), we get a palindrome (972828279).

The spelling of 431513145 in words is "four hundred thirty-one million, five hundred thirteen thousand, one hundred forty-five".