1011233987 has 2 divisors, whose sum is σ = 1011233988. Its totient is φ = 1011233986.

The previous prime is 1011233983. The next prime is 1011233989. The reversal of 1011233987 is 7893321101.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1011233987 - 2² = 1011233983 is a prime.

Together with 1011233989, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1011233983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505616993 + 505616994.

It is an arithmetic number, because the mean of its divisors is an integer number (505616994).

Almost surely, 2^1011233987 is an apocalyptic number.

1011233987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011233987 is an equidigital number, since it uses as much as digits as its factorization.

1011233987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 1011233987 is about 31799.9054558343. The cubic root of 1011233987 is about 1003.7307267031.

The spelling of 1011233987 in words is "one billion, eleven million, two hundred thirty-three thousand, nine hundred eighty-seven".