1031115225 has 48 divisors (see below), whose sum is σ = 1971873792. Its totient is φ = 465668160.

The previous prime is 1031115203. The next prime is 1031115233. The reversal of 1031115225 is 5225111301.

It is not a de Polignac number, because 1031115225 - 2⁹ = 1031114713 is a prime.

It is a super-3 number, since 3×1031115225³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31744 + ... + 55406.

It is an arithmetic number, because the mean of its divisors is an integer number (41080704).

Almost surely, 2^1031115225 is an apocalyptic number.

1031115225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1031115225 is a deficient number, since it is larger than the sum of its proper divisors (940758567).

1031115225 is a wasteful number, since it uses less digits than its factorization.

1031115225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23766 (or 23761 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 1031115225 is about 32110.9829341925. The cubic root of 1031115225 is about 1010.2659904604.

Adding to 1031115225 its reverse (5225111301), we get a palindrome (6256226526).

The spelling of 1031115225 in words is "one billion, thirty-one million, one hundred fifteen thousand, two hundred twenty-five".