513431432 has 8 divisors (see below), whose sum is σ = 962683950. Its totient is φ = 256715712.

The previous prime is 513431417. The next prime is 513431437. The reversal of 513431432 is 234134315.

It can be written as a sum of positive squares in only one way, i.e., 283787716 + 229643716 = 16846^2 + 15154^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×513431432² = 527223670731141248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (513431437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32089457 + ... + 32089472.

Almost surely, 2^513431432 is an apocalyptic number.

It is an amenable number.

513431432 is a deficient number, since it is larger than the sum of its proper divisors (449252518).

513431432 is a wasteful number, since it uses less digits than its factorization.

513431432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64178935 (or 64178931 counting only the distinct ones).

The product of its digits is 4320, while the sum is 26.

The square root of 513431432 is about 22659.0253982822. The cubic root of 513431432 is about 800.7448437944.

Adding to 513431432 its reverse (234134315), we get a palindrome (747565747).

The spelling of 513431432 in words is "five hundred thirteen million, four hundred thirty-one thousand, four hundred thirty-two".