1031552231 has 16 divisors (see below), whose sum is σ = 1143154944. Its totient is φ = 925862784.

The previous prime is 1031552209. The next prime is 1031552233. The reversal of 1031552231 is 1322551301.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1031552231 - 2²² = 1027357927 is a prime.

It is a super-2 number, since 2×1031552231² = 2128200010562154722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1031552197 and 1031552206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031552233) 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, 131876 + ... + 139478.

It is an arithmetic number, because the mean of its divisors is an integer number (71447184).

Almost surely, 2^1031552231 is an apocalyptic number.

1031552231 is a deficient number, since it is larger than the sum of its proper divisors (111602713).

1031552231 is a wasteful number, since it uses less digits than its factorization.

1031552231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7990.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1031552231 is about 32117.7868322212. The cubic root of 1031552231 is about 1010.4086935365.

The spelling of 1031552231 in words is "one billion, thirty-one million, five hundred fifty-two thousand, two hundred thirty-one".