1403401023 has 6 divisors (see below), whose sum is σ = 2027134824. Its totient is φ = 935600676.

The previous prime is 1403400997. The next prime is 1403401037. The reversal of 1403401023 is 3201043041.

It is not a de Polignac number, because 1403401023 - 2¹³ = 1403392831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1403400987 and 1403401005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1403401523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77966715 + ... + 77966732.

It is an arithmetic number, because the mean of its divisors is an integer number (337855804).

Almost surely, 2^1403401023 is an apocalyptic number.

1403401023 is a deficient number, since it is larger than the sum of its proper divisors (623733801).

1403401023 is a wasteful number, since it uses less digits than its factorization.

1403401023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155933453 (or 155933450 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1403401023 is about 37461.9943809723. The cubic root of 1403401023 is about 1119.5940873342.

Adding to 1403401023 its reverse (3201043041), we get a palindrome (4604444064).

The spelling of 1403401023 in words is "one billion, four hundred three million, four hundred one thousand, twenty-three".