1320550231 has 32 divisors (see below), whose sum is σ = 1778047488. Its totient is φ = 947168640.

The previous prime is 1320550223. The next prime is 1320550243.

1320550231 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1320550231 - 2³ = 1320550223 is a prime.

It is a super-2 number, since 2×1320550231² = 3487705825188306722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320550201) 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, 395736 + ... + 399058.

It is an arithmetic number, because the mean of its divisors is an integer number (55563984).

Almost surely, 2^1320550231 is an apocalyptic number.

1320550231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1320550231 is a deficient number, since it is larger than the sum of its proper divisors (457497257).

1320550231 is a wasteful number, since it uses less digits than its factorization.

1320550231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3751.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 1320550231 is about 36339.3757651394. The cubic root of 1320550231 is about 1097.1137090401.

It can be divided in two parts, 13205 and 50231, that added together give a palindrome (63436).

The spelling of 1320550231 in words is "one billion, three hundred twenty million, five hundred fifty thousand, two hundred thirty-one".