1401351320 has 32 divisors (see below), whose sum is σ = 3238261200. Its totient is φ = 545390208.

The previous prime is 1401351319. The next prime is 1401351349. The reversal of 1401351320 is 231531041.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1401351292 and 1401351301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471950 + ... + 474909.

Almost surely, 2^1401351320 is an apocalyptic number.

1401351320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401351320 is an abundant number, since it is smaller than the sum of its proper divisors (1836909880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1401351320 is a wasteful number, since it uses less digits than its factorization.

1401351320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946907 (or 946903 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1401351320 is about 37434.6272854426. The cubic root of 1401351320 is about 1119.0487565150.

Adding to 1401351320 its reverse (231531041), we get a palindrome (1632882361).

The spelling of 1401351320 in words is "one billion, four hundred one million, three hundred fifty-one thousand, three hundred twenty".