1020023403 has 16 divisors (see below), whose sum is σ = 1568851200. Its totient is φ = 577421856.

The previous prime is 1020023401. The next prime is 1020023413. The reversal of 1020023403 is 3043200201.

It is not a de Polignac number, because 1020023403 - 2¹ = 1020023401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1020023401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224728 + ... + 229221.

It is an arithmetic number, because the mean of its divisors is an integer number (98053200).

Almost surely, 2^1020023403 is an apocalyptic number.

1020023403 is a deficient number, since it is larger than the sum of its proper divisors (548827797).

1020023403 is a wasteful number, since it uses less digits than its factorization.

1020023403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454066.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 1020023403 is about 31937.8052314181. The cubic root of 1020023403 is about 1006.6304081912.

Adding to 1020023403 its reverse (3043200201), we get a palindrome (4063223604).

The spelling of 1020023403 in words is "one billion, twenty million, twenty-three thousand, four hundred three".