340123031 has 4 divisors (see below), whose sum is σ = 343629552. Its totient is φ = 336616512.

The previous prime is 340122989. The next prime is 340123033. The reversal of 340123031 is 130321043.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130321043 = 571 ⋅228233.

It is a cyclic number.

It is not a de Polignac number, because 340123031 - 2⁶ = 340122967 is a prime.

It is a super-2 number, since 2×340123031² = 231367352433253922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340123033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1753115 + ... + 1753308.

It is an arithmetic number, because the mean of its divisors is an integer number (85907388).

Almost surely, 2^340123031 is an apocalyptic number.

340123031 is a deficient number, since it is larger than the sum of its proper divisors (3506521).

340123031 is an equidigital number, since it uses as much as digits as its factorization.

340123031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3506520.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 340123031 is about 18442.4247592338. The cubic root of 340123031 is about 698.0373806961.

Adding to 340123031 its reverse (130321043), we get a palindrome (470444074).

The spelling of 340123031 in words is "three hundred forty million, one hundred twenty-three thousand, thirty-one".