531381434 has 4 divisors (see below), whose sum is σ = 797072154. Its totient is φ = 265690716.

The previous prime is 531381421. The next prime is 531381439. The reversal of 531381434 is 434183135.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 485100625 + 46280809 = 22025^2 + 6803^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 531381434.

It is not an unprimeable number, because it can be changed into a prime (531381439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132845357 + ... + 132845360.

Almost surely, 2^531381434 is an apocalyptic number.

531381434 is a deficient number, since it is larger than the sum of its proper divisors (265690720).

531381434 is a wasteful number, since it uses less digits than its factorization.

531381434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265690719.

The product of its digits is 17280, while the sum is 32.

The square root of 531381434 is about 23051.7121706827. The cubic root of 531381434 is about 809.9697362061.

The spelling of 531381434 in words is "five hundred thirty-one million, three hundred eighty-one thousand, four hundred thirty-four".