1812055031 has 2 divisors, whose sum is σ = 1812055032. Its totient is φ = 1812055030.

The previous prime is 1812054991. The next prime is 1812055051. The reversal of 1812055031 is 1305502181.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1812055031 - 2¹⁸ = 1811792887 is a prime.

It is a super-2 number, since 2×1812055031² = 6567086870744821922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1812055051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 906027515 + 906027516.

It is an arithmetic number, because the mean of its divisors is an integer number (906027516).

Almost surely, 2^1812055031 is an apocalyptic number.

1812055031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1812055031 is an equidigital number, since it uses as much as digits as its factorization.

1812055031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 1812055031 is about 42568.2396981599. The cubic root of 1812055031 is about 1219.1499567758.

The spelling of 1812055031 in words is "one billion, eight hundred twelve million, fifty-five thousand, thirty-one".