1331020023 has 32 divisors (see below), whose sum is σ = 1853064192. Its totient is φ = 849139200.

The previous prime is 1331020001. The next prime is 1331020027. The reversal of 1331020023 is 3200201331.

It is not a de Polignac number, because 1331020023 - 2¹⁰ = 1331018999 is a prime.

It is a super-2 number, since 2×1331020023² = 3543228603253841058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1331019984 and 1331020011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331020027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2433036 + ... + 2433582.

It is an arithmetic number, because the mean of its divisors is an integer number (57908256).

Almost surely, 2^1331020023 is an apocalyptic number.

1331020023 is a deficient number, since it is larger than the sum of its proper divisors (522044169).

1331020023 is a wasteful number, since it uses less digits than its factorization.

1331020023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 1331020023 is about 36483.1471093161. The cubic root of 1331020023 is about 1100.0055159503.

Adding to 1331020023 its reverse (3200201331), we get a palindrome (4531221354).

It can be divided in two parts, 13310 and 20023, that added together give a palindrome (33333).

The spelling of 1331020023 in words is "one billion, three hundred thirty-one million, twenty thousand, twenty-three".