157331020 has 144 divisors (see below), whose sum is σ = 436278528. Its totient is φ = 46293120.

The previous prime is 157331011. The next prime is 157331021. The reversal of 157331020 is 20133751.

157331020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 157330982 and 157331000.

It is not an unprimeable number, because it can be changed into a prime (157331021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 555799 + ... + 556081.

It is an arithmetic number, because the mean of its divisors is an integer number (3029712).

Almost surely, 2^157331020 is an apocalyptic number.

157331020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157331020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218139264).

157331020 is an abundant number, since it is smaller than the sum of its proper divisors (278947508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157331020 is a wasteful number, since it uses less digits than its factorization.

157331020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 157331020 is about 12543.1662669360. The cubic root of 157331020 is about 539.8479452996.

Adding to 157331020 its reverse (20133751), we get a palindrome (177464771).

The spelling of 157331020 in words is "one hundred fifty-seven million, three hundred thirty-one thousand, twenty".