1031423731 has 6 divisors (see below), whose sum is σ = 1116867300. Its totient is φ = 952083288.

The previous prime is 1031423719. The next prime is 1031423737. The reversal of 1031423731 is 1373241301.

It is not a de Polignac number, because 1031423731 - 2⁵ = 1031423699 is a prime.

It is a super-2 number, since 2×1031423731² = 2127669825739920722, 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 = 1031423696 and 1031423705.

It is not an unprimeable number, because it can be changed into a prime (1031423737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3051381 + ... + 3051718.

It is an arithmetic number, because the mean of its divisors is an integer number (186144550).

Almost surely, 2^1031423731 is an apocalyptic number.

1031423731 is a deficient number, since it is larger than the sum of its proper divisors (85443569).

1031423731 is an equidigital number, since it uses as much as digits as its factorization.

1031423731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6103125 (or 6103112 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 1031423731 is about 32115.7863207489. The cubic root of 1031423731 is about 1010.3667364079.

The spelling of 1031423731 in words is "one billion, thirty-one million, four hundred twenty-three thousand, seven hundred thirty-one".