1031431444 has 6 divisors (see below), whose sum is σ = 1805005034. Its totient is φ = 515715720.

The previous prime is 1031431409. The next prime is 1031431447. The reversal of 1031431444 is 4441341301.

It can be written as a sum of positive squares in only one way, i.e., 1027971844 + 3459600 = 32062^2 + 1860^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031431447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128928927 + ... + 128928934.

Almost surely, 2^1031431444 is an apocalyptic number.

It is an amenable number.

1031431444 is a deficient number, since it is larger than the sum of its proper divisors (773573590).

1031431444 is a wasteful number, since it uses less digits than its factorization.

1031431444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257857865 (or 257857863 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 1031431444 is about 32115.9064016571. The cubic root of 1031431444 is about 1010.3692549134.

Adding to 1031431444 its reverse (4441341301), we get a palindrome (5472772745).

The spelling of 1031431444 in words is "one billion, thirty-one million, four hundred thirty-one thousand, four hundred forty-four".