1012551031 has 4 divisors (see below), whose sum is σ = 1021840600. Its totient is φ = 1003261464.

The previous prime is 1012551019. The next prime is 1012551049. The reversal of 1012551031 is 1301552101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1301552101 = 149 ⋅8735249.

It is a cyclic number.

It is not a de Polignac number, because 1012551031 - 2⁹ = 1012550519 is a prime.

It is a super-2 number, since 2×1012551031² = 2050519180758325922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012551431) 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, 4644621 + ... + 4644838.

It is an arithmetic number, because the mean of its divisors is an integer number (255460150).

Almost surely, 2^1012551031 is an apocalyptic number.

1012551031 is a deficient number, since it is larger than the sum of its proper divisors (9289569).

1012551031 is an equidigital number, since it uses as much as digits as its factorization.

1012551031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9289568.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 1012551031 is about 31820.6070180944. The cubic root of 1012551031 is about 1004.1662948808.

The spelling of 1012551031 in words is "one billion, twelve million, five hundred fifty-one thousand, thirty-one".