1631320153 has 8 divisors (see below), whose sum is σ = 1727735400. Its totient is φ = 1534955520.

The previous prime is 1631320127. The next prime is 1631320169. The reversal of 1631320153 is 3510231361.

It can be written as a sum of positive squares in 4 ways, for example, as 629407744 + 1001912409 = 25088^2 + 31653^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1631320153 - 2¹⁷ = 1631189081 is a prime.

It is a super-2 number, since 2×1631320153² = 5322410883167886818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1631320253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68713 + ... + 89353.

It is an arithmetic number, because the mean of its divisors is an integer number (215966925).

Almost surely, 2^1631320153 is an apocalyptic number.

It is an amenable number.

1631320153 is a deficient number, since it is larger than the sum of its proper divisors (96415247).

1631320153 is a wasteful number, since it uses less digits than its factorization.

1631320153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25307.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 1631320153 is about 40389.6045165089. The cubic root of 1631320153 is about 1177.1895562038.

The spelling of 1631320153 in words is "one billion, six hundred thirty-one million, three hundred twenty thousand, one hundred fifty-three".