1401431340 has 24 divisors (see below), whose sum is σ = 3924007920. Its totient is φ = 373715008.

The previous prime is 1401431333. The next prime is 1401431347. The reversal of 1401431340 is 431341041.

It is an interprime number because it is at equal distance from previous prime (1401431333) and next prime (1401431347).

It is not an unprimeable number, because it can be changed into a prime (1401431347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11678535 + ... + 11678654.

It is an arithmetic number, because the mean of its divisors is an integer number (163500330).

Almost surely, 2^1401431340 is an apocalyptic number.

1401431340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401431340 is an abundant number, since it is smaller than the sum of its proper divisors (2522576580).

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

1401431340 is a wasteful number, since it uses less digits than its factorization.

1401431340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23357201 (or 23357199 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1401431340 is about 37435.6960667222. The cubic root of 1401431340 is about 1119.0700560934.

Adding to 1401431340 its reverse (431341041), we get a palindrome (1832772381).

It can be divided in two parts, 14014 and 31340, that added together give a palindrome (45354).

The spelling of 1401431340 in words is "one billion, four hundred one million, four hundred thirty-one thousand, three hundred forty".