1031450661 has 12 divisors (see below), whose sum is σ = 1495374400. Its totient is φ = 685094760.

The previous prime is 1031450657. The next prime is 1031450671. The reversal of 1031450661 is 1660541301.

It is not a de Polignac number, because 1031450661 - 2² = 1031450657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031450621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 209011 + ... + 213888.

Almost surely, 2^1031450661 is an apocalyptic number.

It is an amenable number.

1031450661 is a deficient number, since it is larger than the sum of its proper divisors (463923739).

1031450661 is a wasteful number, since it uses less digits than its factorization.

1031450661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423176 (or 423173 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1031450661 is about 32116.2055822290. The cubic root of 1031450661 is about 1010.3755297352.

Adding to 1031450661 its reverse (1660541301), we get a palindrome (2691991962).

The spelling of 1031450661 in words is "one billion, thirty-one million, four hundred fifty thousand, six hundred sixty-one".