1012656531 has 16 divisors (see below), whose sum is σ = 1376883360. Its totient is φ = 661789440.

The previous prime is 1012656529. The next prime is 1012656577. The reversal of 1012656531 is 1356562101.

It is not a de Polignac number, because 1012656531 - 2¹ = 1012656529 is a prime.

It is a super-2 number, since 2×1012656531² = 2050946499553907922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1012656131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255775 + ... + 259703.

It is an arithmetic number, because the mean of its divisors is an integer number (86055210).

Almost surely, 2^1012656531 is an apocalyptic number.

1012656531 is a deficient number, since it is larger than the sum of its proper divisors (364226829).

1012656531 is a wasteful number, since it uses less digits than its factorization.

1012656531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5606.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 1012656531 is about 31822.2647057057. The cubic root of 1012656531 is about 1004.2011691280.

The spelling of 1012656531 in words is "one billion, twelve million, six hundred fifty-six thousand, five hundred thirty-one".