1087222731 has 96 divisors (see below), whose sum is σ = 1899878400. Its totient is φ = 548674560.

The previous prime is 1087222729. The next prime is 1087222733. The reversal of 1087222731 is 1372227801.

It is an interprime number because it is at equal distance from previous prime (1087222729) and next prime (1087222733).

It is not a de Polignac number, because 1087222731 - 2¹ = 1087222729 is a prime.

It is a super-2 number, since 2×1087222731² = 2364106533606196722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1087222692 and 1087222701.

It is not an unprimeable number, because it can be changed into a prime (1087222733) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2510691 + ... + 2511123.

It is an arithmetic number, because the mean of its divisors is an integer number (19790400).

Almost surely, 2^1087222731 is an apocalyptic number.

1087222731 is a deficient number, since it is larger than the sum of its proper divisors (812655669).

1087222731 is a wasteful number, since it uses less digits than its factorization.

1087222731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529 (or 522 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 1087222731 is about 32973.0606859600. The cubic root of 1087222731 is about 1028.2676542059.

The spelling of 1087222731 in words is "one billion, eighty-seven million, two hundred twenty-two thousand, seven hundred thirty-one".