1031023155 has 16 divisors (see below), whose sum is σ = 1651646880. Its totient is φ = 549209088.

The previous prime is 1031023127. The next prime is 1031023199. The reversal of 1031023155 is 5513201301.

It is not a de Polignac number, because 1031023155 - 2²⁰ = 1029974579 is a prime.

It is a super-2 number, since 2×1031023155² = 2126017492292308050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29022 + ... + 53891.

It is an arithmetic number, because the mean of its divisors is an integer number (103227930).

Almost surely, 2^1031023155 is an apocalyptic number.

1031023155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1031023155 is a deficient number, since it is larger than the sum of its proper divisors (620623725).

1031023155 is an equidigital number, since it uses as much as digits as its factorization.

1031023155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83750.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 1031023155 is about 32109.5492805489. The cubic root of 1031023155 is about 1010.2359201197.

Adding to 1031023155 its reverse (5513201301), we get a palindrome (6544224456).

The spelling of 1031023155 in words is "one billion, thirty-one million, twenty-three thousand, one hundred fifty-five".