1601303631 has 24 divisors (see below), whose sum is σ = 2252656560. Its totient is φ = 1011643776.

The previous prime is 1601303629. The next prime is 1601303647. The reversal of 1601303631 is 1363031061.

It is not a de Polignac number, because 1601303631 - 2¹ = 1601303629 is a prime.

It is a super-2 number, since 2×1601303631² = 5128346637307568322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601303651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 168355 + ... + 177611.

It is an arithmetic number, because the mean of its divisors is an integer number (93860690).

Almost surely, 2^1601303631 is an apocalyptic number.

1601303631 is a deficient number, since it is larger than the sum of its proper divisors (651352929).

1601303631 is a wasteful number, since it uses less digits than its factorization.

1601303631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9415 (or 9392 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 1601303631 is about 40016.2920696058. The cubic root of 1601303631 is about 1169.9246624001.

Adding to 1601303631 its reverse (1363031061), we get a palindrome (2964334692).

The spelling of 1601303631 in words is "one billion, six hundred one million, three hundred three thousand, six hundred thirty-one".