1031402309 has 4 divisors (see below), whose sum is σ = 1178745504. Its totient is φ = 884059116.

The previous prime is 1031402297. The next prime is 1031402311. The reversal of 1031402309 is 9032041301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1031402309 - 2¹² = 1031398213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031402369) 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 3 ways as a sum of consecutive naturals, for example, 73671587 + ... + 73671600.

It is an arithmetic number, because the mean of its divisors is an integer number (294686376).

Almost surely, 2^1031402309 is an apocalyptic number.

It is an amenable number.

1031402309 is a deficient number, since it is larger than the sum of its proper divisors (147343195).

1031402309 is an equidigital number, since it uses as much as digits as its factorization.

1031402309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147343194.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 1031402309 is about 32115.4528070211. The cubic root of 1031402309 is about 1010.3597414728.

The spelling of 1031402309 in words is "one billion, thirty-one million, four hundred two thousand, three hundred nine".