1011142997 has 4 divisors (see below), whose sum is σ = 1055105760. Its totient is φ = 967180236.

The previous prime is 1011142991. The next prime is 1011142999. The reversal of 1011142997 is 7992411101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7992411101 = 463 ⋅17262227.

It is a cyclic number.

It is not a de Polignac number, because 1011142997 - 2¹² = 1011138901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011142991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21981347 + ... + 21981392.

It is an arithmetic number, because the mean of its divisors is an integer number (263776440).

Almost surely, 2^1011142997 is an apocalyptic number.

It is an amenable number.

1011142997 is a deficient number, since it is larger than the sum of its proper divisors (43962763).

1011142997 is an equidigital number, since it uses as much as digits as its factorization.

1011142997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43962762.

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 1011142997 is about 31798.4747590195. The cubic root of 1011142997 is about 1003.7006208459.

The spelling of 1011142997 in words is "one billion, eleven million, one hundred forty-two thousand, nine hundred ninety-seven".