75431000 has 32 divisors (see below), whose sum is σ = 176510880. Its totient is φ = 30172000.

The previous prime is 75430963. The next prime is 75431051. The reversal of 75431000 is 13457.

It is a happy number.

It is a super-2 number, since 2×75431000² = 11379671522000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36716 + ... + 38715.

It is an arithmetic number, because the mean of its divisors is an integer number (5515965).

Almost surely, 2^75431000 is an apocalyptic number.

It is an amenable number.

75431000 is an abundant number, since it is smaller than the sum of its proper divisors (101079880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75431000 is a wasteful number, since it uses less digits than its factorization.

75431000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75452 (or 75438 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 75431000 is about 8685.1021870787. The cubic root of 75431000 is about 422.5226112101.

Adding to 75431000 its reverse (13457), we get a palindrome (75444457).

The spelling of 75431000 in words is "seventy-five million, four hundred thirty-one thousand".