151405123403 has 4 divisors (see below), whose sum is σ = 151406402928. Its totient is φ = 151403843880.

The previous prime is 151405123381. The next prime is 151405123411. The reversal of 151405123403 is 304321504151.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 151405123403 - 2³² = 147110156107 is a prime.

It is a super-2 number, since 2×151405123403² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151405123423) 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, 441863 + ... + 705728.

It is an arithmetic number, because the mean of its divisors is an integer number (37851600732).

Almost surely, 2^151405123403 is an apocalyptic number.

151405123403 is a deficient number, since it is larger than the sum of its proper divisors (1279525).

151405123403 is a wasteful number, since it uses less digits than its factorization.

151405123403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279524.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 151405123403 its reverse (304321504151), we get a palindrome (455726627554).

The spelling of 151405123403 in words is "one hundred fifty-one billion, four hundred five million, one hundred twenty-three thousand, four hundred three".