1125731 has 8 divisors (see below), whose sum is σ = 1195200. Its totient is φ = 1057320.

The previous prime is 1125713. The next prime is 1125739. The reversal of 1125731 is 1375211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1125731 - 2¹⁴ = 1109347 is a prime.

It is a super-3 number, since 3×1125731³ = 4279816333451978673, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3236 + ... + 3566.

It is an arithmetic number, because the mean of its divisors is an integer number (149400).

2^1125731 is an apocalyptic number.

1125731 is a deficient number, since it is larger than the sum of its proper divisors (69469).

1125731 is a wasteful number, since it uses less digits than its factorization.

1125731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529.

The product of its digits is 210, while the sum is 20.

The square root of 1125731 is about 1061.0047125249. The cubic root of 1125731 is about 104.0267128127.

The spelling of 1125731 in words is "one million, one hundred twenty-five thousand, seven hundred thirty-one".