263431004 has 12 divisors (see below), whose sum is σ = 465313464. Its totient is φ = 130484304.

The previous prime is 263430989. The next prime is 263431033. The reversal of 263431004 is 400134362.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307319 + ... + 308174.

It is an arithmetic number, because the mean of its divisors is an integer number (38776122).

Almost surely, 2^263431004 is an apocalyptic number.

It is an amenable number.

263431004 is a deficient number, since it is larger than the sum of its proper divisors (201882460).

263431004 is a wasteful number, since it uses less digits than its factorization.

263431004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615604 (or 615602 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 263431004 is about 16230.5577230112. The cubic root of 263431004 is about 641.0456571702.

Adding to 263431004 its reverse (400134362), we get a palindrome (663565366).

The spelling of 263431004 in words is "two hundred sixty-three million, four hundred thirty-one thousand, four".