153031431 has 8 divisors (see below), whose sum is σ = 233190784. Its totient is φ = 87446520.

The previous prime is 153031423. The next prime is 153031447. The reversal of 153031431 is 134130351.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 153031431 - 2³ = 153031423 is a prime.

It is a super-2 number, since 2×153031431² = 46837237747815522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 7287211 = 153031431 / (1 + 5 + 3 + 0 + 3 + 1 + 4 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 153031398 and 153031407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153031481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3643585 + ... + 3643626.

It is an arithmetic number, because the mean of its divisors is an integer number (29148848).

Almost surely, 2^153031431 is an apocalyptic number.

153031431 is a deficient number, since it is larger than the sum of its proper divisors (80159353).

153031431 is an equidigital number, since it uses as much as digits as its factorization.

153031431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7287221.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 153031431 is about 12370.5873344801. The cubic root of 153031431 is about 534.8847464777.

Adding to 153031431 its reverse (134130351), we get a palindrome (287161782).

The spelling of 153031431 in words is "one hundred fifty-three million, thirty-one thousand, four hundred thirty-one".