1401331505 has 32 divisors (see below), whose sum is σ = 2045585664. Its totient is φ = 899629056.

The previous prime is 1401331499. The next prime is 1401331513. The reversal of 1401331505 is 5051331041.

It is a cyclic number.

It is not a de Polignac number, because 1401331505 - 2⁸ = 1401331249 is a prime.

It is a Duffinian 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, 108734 + ... + 120936.

It is an arithmetic number, because the mean of its divisors is an integer number (63924552).

Almost surely, 2^1401331505 is an apocalyptic number.

It is an amenable number.

1401331505 is a deficient number, since it is larger than the sum of its proper divisors (644254159).

1401331505 is a wasteful number, since it uses less digits than its factorization.

1401331505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12425.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1401331505 is about 37434.3626231301. The cubic root of 1401331505 is about 1119.0434820690.

Adding to 1401331505 its reverse (5051331041), we get a palindrome (6452662546).

The spelling of 1401331505 in words is "one billion, four hundred one million, three hundred thirty-one thousand, five hundred five".