1073142731 has 8 divisors (see below), whose sum is σ = 1137862080. Its totient is φ = 1008600448.

The previous prime is 1073142691. The next prime is 1073142757. The reversal of 1073142731 is 1372413701.

It is a happy number.

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 1073142731 - 2¹⁸ = 1072880587 is a prime.

It is a super-2 number, since 2×1073142731² = 2303270642196276722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1073142694 and 1073142703.

It is not an unprimeable number, because it can be changed into a prime (1073142431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31676 + ... + 56121.

It is an arithmetic number, because the mean of its divisors is an integer number (142232760).

Almost surely, 2^1073142731 is an apocalyptic number.

1073142731 is a deficient number, since it is larger than the sum of its proper divisors (64719349).

1073142731 is an equidigital number, since it uses as much as digits as its factorization.

1073142731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88533.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 1073142731 is about 32758.8572908153. The cubic root of 1073142731 is about 1023.8095180335.

The spelling of 1073142731 in words is "one billion, seventy-three million, one hundred forty-two thousand, seven hundred thirty-one".