1061443631 has 4 divisors (see below), whose sum is σ = 1061508792. Its totient is φ = 1061378472.

The previous prime is 1061443589. The next prime is 1061443657. The reversal of 1061443631 is 1363441601.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1363441601 = 37 ⋅36849773.

It is a cyclic number.

It is not a de Polignac number, because 1061443631 - 2⁶ = 1061443567 is a prime.

It is a super-2 number, since 2×1061443631² = 2253325163580928322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1061443594 and 1061443603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061443931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16121 + ... + 48813.

It is an arithmetic number, because the mean of its divisors is an integer number (265377198).

Almost surely, 2^1061443631 is an apocalyptic number.

1061443631 is a deficient number, since it is larger than the sum of its proper divisors (65161).

1061443631 is an equidigital number, since it uses as much as digits as its factorization.

1061443631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65160.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1061443631 is about 32579.8040356292. The cubic root of 1061443631 is about 1020.0754881335.

It can be divided in two parts, 10614 and 43631, that added together give a palindrome (54245).

The spelling of 1061443631 in words is "one billion, sixty-one million, four hundred forty-three thousand, six hundred thirty-one".