1010021431 has 2 divisors, whose sum is σ = 1010021432. Its totient is φ = 1010021430.

The previous prime is 1010021423. The next prime is 1010021443. The reversal of 1010021431 is 1341200101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1010021431 - 2³ = 1010021423 is a prime.

It is a super-2 number, since 2×1010021431² = 2040286582158575522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1010021401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505010715 + 505010716.

It is an arithmetic number, because the mean of its divisors is an integer number (505010716).

Almost surely, 2^1010021431 is an apocalyptic number.

1010021431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010021431 is an equidigital number, since it uses as much as digits as its factorization.

1010021431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1010021431 is about 31780.8343345482. The cubic root of 1010021431 is about 1003.3293799275.

Adding to 1010021431 its reverse (1341200101), we get a palindrome (2351221532).

The spelling of 1010021431 in words is "one billion, ten million, twenty-one thousand, four hundred thirty-one".