1400401331 has 24 divisors (see below), whose sum is σ = 1675132416. Its totient is φ = 1166734800.

The previous prime is 1400401307. The next prime is 1400401361. The reversal of 1400401331 is 1331040041.

It is not a de Polignac number, because 1400401331 - 2¹⁸ = 1400139187 is a prime.

It is a super-2 number, since 2×1400401331² = 3922247775733143122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1400401361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 345740 + ... + 349766.

It is an arithmetic number, because the mean of its divisors is an integer number (69797184).

Almost surely, 2^1400401331 is an apocalyptic number.

1400401331 is a deficient number, since it is larger than the sum of its proper divisors (274731085).

1400401331 is a wasteful number, since it uses less digits than its factorization.

1400401331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4239 (or 4232 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1400401331 is about 37421.9364945215. The cubic root of 1400401331 is about 1118.7958281904.

Adding to 1400401331 its reverse (1331040041), we get a palindrome (2731441372).

The spelling of 1400401331 in words is "one billion, four hundred million, four hundred one thousand, three hundred thirty-one".