345142251 has 24 divisors (see below), whose sum is σ = 517570560. Its totient is φ = 221396400.

The previous prime is 345142249. The next prime is 345142261. The reversal of 345142251 is 152241543.

It is not a de Polignac number, because 345142251 - 2¹ = 345142249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (345142261) 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, 46486 + ... + 53396.

It is an arithmetic number, because the mean of its divisors is an integer number (21565440).

Almost surely, 2^345142251 is an apocalyptic number.

345142251 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

345142251 is a deficient number, since it is larger than the sum of its proper divisors (172428309).

345142251 is a wasteful number, since it uses less digits than its factorization.

345142251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7127 (or 7124 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 345142251 is about 18578.0044945629. The cubic root of 345142251 is about 701.4542901419.

Adding to 345142251 its reverse (152241543), we get a palindrome (497383794).

The spelling of 345142251 in words is "three hundred forty-five million, one hundred forty-two thousand, two hundred fifty-one".