231402011 has 24 divisors (see below), whose sum is σ = 265012224. Its totient is φ = 201421440.

The previous prime is 231401999. The next prime is 231402013. The reversal of 231402011 is 110204132.

It is not a de Polignac number, because 231402011 - 2²² = 227207707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231402013) 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, 205496 + ... + 206618.

It is an arithmetic number, because the mean of its divisors is an integer number (11042176).

Almost surely, 2^231402011 is an apocalyptic number.

231402011 is a deficient number, since it is larger than the sum of its proper divisors (33610213).

231402011 is a wasteful number, since it uses less digits than its factorization.

231402011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211 (or 1194 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 231402011 is about 15211.9035955399. The cubic root of 231402011 is about 613.9349765092.

Adding to 231402011 its reverse (110204132), we get a palindrome (341606143).

The spelling of 231402011 in words is "two hundred thirty-one million, four hundred two thousand, eleven".