1303431023 has 4 divisors (see below), whose sum is σ = 1303562808. Its totient is φ = 1303299240.

The previous prime is 1303430927. The next prime is 1303431029. The reversal of 1303431023 is 3201343031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1303431023 - 2¹⁴ = 1303414639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1303430986 and 1303431004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303431029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49736 + ... + 71277.

It is an arithmetic number, because the mean of its divisors is an integer number (325890702).

Almost surely, 2^1303431023 is an apocalyptic number.

1303431023 is a deficient number, since it is larger than the sum of its proper divisors (131785).

1303431023 is a wasteful number, since it uses less digits than its factorization.

1303431023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131784.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1303431023 is about 36103.0611306022. The cubic root of 1303431023 is about 1092.3521919331.

Adding to 1303431023 its reverse (3201343031), we get a palindrome (4504774054).

The spelling of 1303431023 in words is "one billion, three hundred three million, four hundred thirty-one thousand, twenty-three".