1011506372531 has 2 divisors, whose sum is σ = 1011506372532. Its totient is φ = 1011506372530.

The previous prime is 1011506372417. The next prime is 1011506372599. The reversal of 1011506372531 is 1352736051101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1011506372531 - 2³⁴ = 994326503347 is a prime.

It is a super-2 number, since 2×1011506372531² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1011506372491 and 1011506372500.

It is not a weakly prime, because it can be changed into another prime (1011506374531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505753186265 + 505753186266.

It is an arithmetic number, because the mean of its divisors is an integer number (505753186266).

Almost surely, 2^{1011506372531} is an apocalyptic number.

1011506372531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011506372531 is an equidigital number, since it uses as much as digits as its factorization.

1011506372531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 35.

The spelling of 1011506372531 in words is "one trillion, eleven billion, five hundred six million, three hundred seventy-two thousand, five hundred thirty-one".