1115206131 has 8 divisors (see below), whose sum is σ = 1601321680. Its totient is φ = 686280672.

The previous prime is 1115206097. The next prime is 1115206139. The reversal of 1115206131 is 1316025111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1115206131 - 2⁶ = 1115206067 is a prime.

It is a super-2 number, since 2×1115206131² = 2487369429239978322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1115206098 and 1115206107.

It is not an unprimeable number, because it can be changed into a prime (1115206139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14297476 + ... + 14297553.

It is an arithmetic number, because the mean of its divisors is an integer number (200165210).

Almost surely, 2^1115206131 is an apocalyptic number.

1115206131 is a deficient number, since it is larger than the sum of its proper divisors (486115549).

1115206131 is a wasteful number, since it uses less digits than its factorization.

1115206131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28595045.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 1115206131 is about 33394.7021397107. The cubic root of 1115206131 is about 1037.0150265622.

The spelling of 1115206131 in words is "one billion, one hundred fifteen million, two hundred six thousand, one hundred thirty-one".