1012605431 has 2 divisors, whose sum is σ = 1012605432. Its totient is φ = 1012605430.

The previous prime is 1012605427. The next prime is 1012605449. The reversal of 1012605431 is 1345062101.

It is a weak prime.

It is an emirp because it is prime and its reverse (1345062101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1012605431 - 2² = 1012605427 is a prime.

It is a super-2 number, since 2×1012605431² = 2050739517781391522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1012605397 and 1012605406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012605491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506302715 + 506302716.

It is an arithmetic number, because the mean of its divisors is an integer number (506302716).

Almost surely, 2^1012605431 is an apocalyptic number.

1012605431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012605431 is an equidigital number, since it uses as much as digits as its factorization.

1012605431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1012605431 is about 31821.4617986038. The cubic root of 1012605431 is about 1004.1842777335.

Adding to 1012605431 its reverse (1345062101), we get a palindrome (2357667532).

The spelling of 1012605431 in words is "one billion, twelve million, six hundred five thousand, four hundred thirty-one".