1631061005 has 32 divisors (see below), whose sum is σ = 2407345920. Its totient is φ = 1035371520.

The previous prime is 1631060987. The next prime is 1631061011. The reversal of 1631061005 is 5001601361.

It is a happy number.

It is not a de Polignac number, because 1631061005 - 2²⁶ = 1563952141 is a prime.

It is a super-2 number, since 2×1631061005² = 5320720004063220050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13826 + ... + 58764.

It is an arithmetic number, because the mean of its divisors is an integer number (75229560).

Almost surely, 2^1631061005 is an apocalyptic number.

It is an amenable number.

1631061005 is a deficient number, since it is larger than the sum of its proper divisors (776284915).

1631061005 is a wasteful number, since it uses less digits than its factorization.

1631061005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45029.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1631061005 is about 40386.3962863735. The cubic root of 1631061005 is about 1177.1272176383.

Adding to 1631061005 its reverse (5001601361), we get a palindrome (6632662366).

The spelling of 1631061005 in words is "one billion, six hundred thirty-one million, sixty-one thousand, five".